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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AmericanOceanMineralsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">American Ocean Minerals [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AmericanOceanMineralsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">American ocean minerals.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskByTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk Type [Axis]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityOfWarrantsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Of Warrants Exercised</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityOfWarrantsExercised_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Warrants Exercised</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation, State or Country Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ShareRedemptionPrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Redemption Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ShareRedemptionPrice_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share redemption price.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total of fair valued liabilities</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Current Reporting Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleLeasebackTransactionDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale-leaseback Financing Obligations</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ElevenEmergencyInjuryDisasterLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Emergency Injury Disaster Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ElevenEmergencyInjuryDisasterLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Eleven emergency injury disaster loan.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueChangeInDebtInstrumentsGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Change In Debt Instruments Gain Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueChangeInDebtInstrumentsGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value change in debt instruments gain loss.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueChangeInDebtInstrumentsGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value change of debt instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment in Unconsolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value by Liability Class [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Period Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Period Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease, Liability, to be Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest rate, stated percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt instrument interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Interest rate, stated percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Shell Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Shell Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarchTwoThousandAndTwentyThreeNoteWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">March 2023 Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarchTwoThousandAndTwentyThreeNoteWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">March Two Thousand And Twenty Three Note Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarchTwoThousandAndTwentyThreeNoteWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">March two thousand and twenty three note warrants.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Issuance of new instrument</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Classification of warrant as liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Purchase of Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining purchase of notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segment Reporting</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueChangeInConvertibleDebtGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Change In Convertible Debt Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueChangeInConvertibleDebtGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value change In convertible debt gain (loss).</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueChangeInConvertibleDebtGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value change of convertible debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueInterestsPerCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Interests Per Compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueInterestsPerCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value interests per compensation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueInterestsPerCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value interests per compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Receivable Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Receivable Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaResourcesMexicoSDeRLDeCVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ORM [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaResourcesMexicoSDeRLDeCVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Oceanica Resources Mexico, S. De R.L. De C.V. [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaResourcesMexicoSDeRLDeCVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Oceanica resources mexico, S. De R.L. De C.V.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaResourcesMexicoSDeRLDeCVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Oceanica Resources Mexico, S. de R.L. de C.V.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Grant-date fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EquityExchangeRightsInConnectionWithMexicanCorporateTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity exchange rights in connection with Mexican Corporate Transactions [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EquityExchangeRightsInConnectionWithMexicanCorporateTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity exchange rights in connection with mexican corporate transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EquityExchangeRightsInConnectionWithMexicanCorporateTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Exchange Rights in Connection with Mexican Corporate Transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_InitialBaseRent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Initial base rent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_InitialBaseRent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Initial Base Rent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_InitialBaseRent_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Initial base rent.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PutOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Put Option Liability [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PutOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Put Option [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PutOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Put Options</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Exercise Price, Cancellation/Expiration</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock Warrant Related</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Filer Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Filer Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PayablesAndAccrualsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payables and Accruals [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Exercise Price, Options exercisable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OMLEquityExchangeAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">OML Equity Exchange Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OMLEquityExchangeAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">OML Equity Exchange Agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OMLEquityExchangeAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">OML Equity Exchange Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AcceleratedShareRepurchasesFinalPricePaidPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accelerated Share Repurchases, Final Price Paid Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AcceleratedShareRepurchasesFinalPricePaidPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Average market price during the period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Fair Value Hierarchy for Financial Liabilities Measured At Fair Value on a Recurring Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaResourcesSDeRLMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Oceanica Resources, S. De R.L. [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaResourcesSDeRLMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Oceanica resources, s. de r.l.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaResourcesSDeRLMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Oceanica [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PurchasePriceOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Purchase Price of Warrants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PurchasePriceOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Purchase price of warrants.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PurchasePriceOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchase price of warrants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarchTwoThousandTwentythreeWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">March 2023 Warrants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarchTwoThousandTwentythreeWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">March Two Thousand Twentythree Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarchTwoThousandTwentythreeWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">March two thousand twentythree warrants.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityOfDebtConversionToEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Of Debt Conversion To Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityOfDebtConversionToEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value measurement with unobservable inputs reconciliation recurring basis liability of debt conversion to equity.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityOfDebtConversionToEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt conversion to equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeStockOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Option Awards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Convertible Debt Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConvertibleDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Convertible Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxAuthorityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Jurisdiction [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxAuthorityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax Authority [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net operating loss carryforwards, indefinitely</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ExplorationLicenseImpairments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Exploration license impairments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ExplorationLicenseImpairments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Exploration license impairments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleLeasebackCarryingValueOfFinancingLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sale leaseback carrying value of financing liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleLeasebackCarryingValueOfFinancingLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale-leaseback carrying value of financing liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleLeasebackCarryingValueOfFinancingLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale Leaseback Carrying Value Of Financing Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Numerator:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss) Available to Common Stockholders, Basic [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PercentageOfIssuedAndOutstandingMembershipOwned_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of issued and outstanding membership owned.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PercentageOfIssuedAndOutstandingMembershipOwned_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of issued and outstanding membership owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PercentageOfIssuedAndOutstandingMembershipOwned_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Issued And Outstanding Membership Owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DebtInstrumentMaturityPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt Instrument Maturity Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DebtInstrumentMaturityPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Maturity Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DebtInstrumentMaturityPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument maturity period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Significant Accounting Policies [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Summary of Significant Accounting Policies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AggregateAmountOfAdditionalFairValueOfUnderlyingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Aggregate Amount Of Additional Fair Value Of Underlying Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AggregateAmountOfAdditionalFairValueOfUnderlyingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Aggregate Amount Of Additional Fair Value Of Underlying Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CICLLCOptionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CIC LLC Option Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CICLLCOptionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">CIC LLC option agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CICLLCOptionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CIC LLC Option Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantDownRoundFeatureDecreaseInNetIncomeLossToCommonShareholderAmount_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Fair value change of warrants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantDownRoundFeatureDecreaseInNetIncomeLossToCommonShareholderAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant, Down Round Feature, Decrease in Net Income to Common Shareholder, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VestingDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vesting [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of stock options granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleLeasebackTransactionNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale Leaseback Transaction, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reconciliation of Numerators and Denominators used in Computing Basic and Diluted Net Income Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_LoansPayableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">A category that describes the group of loans for which information is presented. For example, first mortgage, second mortgage, line of credit, etc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_LoansPayableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Payable (Text Block)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_LoansPayableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Concentration of Credit Risk</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings Per Share, Basic, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SalariesAndWages_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Salaries and Wages</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SalariesAndWages_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Salary and Wage, NonOfficer, Excluding Cost of Good and Service Sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_WarrantLiabilityTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant Liability Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_WarrantLiabilityTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Warrant liability two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_WarrantLiabilityTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">March 2023 Warrants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_March2023NotesAndMarch2023WarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">March 2023 Notes and March 2023 Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_March2023NotesAndMarch2023WarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">March 2023 Notes and March 2023 Warrants.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Number of Shares, Outstanding, Ending</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Number of Shares, Outstanding, Beginning</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AfcoInsuranceNotePayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">AFCO Insurance note payable [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AfcoInsuranceNotePayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AFCO Insurance Note Payable [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AfcoInsuranceNotePayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">AFCO Insurance Note Payable [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleLeasebackTransactionDatedAprilFourTwoThousandAndTwentyThrMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale-leaseback Transaction Dated April 4, 2023 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleLeasebackTransactionDatedAprilFourTwoThousandAndTwentyThrMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale Leaseback Transaction Dated April Four Two Thousand And Twenty Thr [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleLeasebackTransactionDatedAprilFourTwoThousandAndTwentyThrMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sale Leaseback Transaction Dated April Four Two Thousand And Twenty Thr.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DomesticCountryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Federal [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DomesticCountryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Domestic Country Member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DomesticCountryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Domestic Tax Jurisdiction [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FinanceLeaseLiabilityPaymentsDueAfterYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease Liability Payments Due After Year Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FinanceLeaseLiabilityPaymentsDueAfterYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance lease liability payments due after year two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FinanceLeaseLiabilityPaymentsDueAfterYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoThousandTwentyTwoWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022 Warrants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoThousandTwentyTwoWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Two Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoThousandTwentyTwoWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand twenty two warrants.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_JointVentureFormationFairValueOfJointVenture_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair market value of joint venture</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_JointVentureFormationFairValueOfJointVenture_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Joint Venture Formation, Fair Value of Joint Venture</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitySmallBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Small Business</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitySmallBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Small Business</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherCommitmentsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Settlement Of outstanding Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherCommitmentsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Commitments [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoCustomersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Customers [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoCustomersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Two Customers [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoCustomersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two Customers [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net operating loss carryforwards subject to expiration</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock, Price Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchase price per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_March2023WarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">March 2023 Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_March2023WarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">March 2023 Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_March2023WarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">March 2023 warrants.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization, Consolidation and Presentation of Financial Statements [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dilutive effect of convertible debt instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeasesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Leases [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SecuritiesPurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Securities Purchase Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SecuritiesPurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Securities Purchase Agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SecuritiesPurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SPA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BeneficialOwnershipPercentageApplicableToWarrantsHeld_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Beneficial Ownership Percentage Applicable to Warrants Held</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BeneficialOwnershipPercentageApplicableToWarrantsHeld_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Beneficial ownership percentage applicable to warrants held.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BeneficialOwnershipPercentageApplicableToWarrantsHeld_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Beneficial ownership percentage applicable to warrants held</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amendment Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OperationsAndResearchExpenseExcludingCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operations and research (excluding compensation)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OperationsAndResearchExpenseExcludingCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operations And Research Expense Excluding Compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OperationsAndResearchExpenseExcludingCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Operations and research expense excluding compensation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of warrant or right, Number of securities called by warrants or rights</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common stock issued for warrants exercised, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common stock issued for warrants exercised, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Earnings Per Share ("EPS")</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImmaterialErrorCorrection_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Immaterial Error Correction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImmaterialErrorCorrection_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Immaterial error correction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Postal Zip Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingCodmProfitLossMeasureHowUsedDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update and Change in Accounting Principle [Table]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Debt Discount (Premium)</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PortionAtFairValueFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Portion at Fair Value Measurement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Address Line One</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Options Valued in Estimated on Date of Grant Using Black-Scholes Option-Pricing Model with Following Assumptions Used for Grants Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsSensitivityAnalysisDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unobservable Measurement Input, Uncertainty, Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsSensitivityAnalysisDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value measurement input description</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LitigationSettlementAmountAwardedFromOtherParty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-cash financing related to litigation financing</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OtherAccountsReceivableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PrePublicFinancingAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pre-public Financing Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PrePublicFinancingAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre-public financing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Changes in Level 3 Fair Value Measurements</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ScheduleOfFinancialInformationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of financial information.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfArrangementAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collaborative Arrangement and Arrangement Other than Collaborative [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_Share-BasedCompensationArrangementByShare-BasedPaymentAwardOptionsIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_Share-BasedCompensationArrangementByShare-BasedPaymentAwardOptionsIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_Share-BasedCompensationArrangementByShare-BasedPaymentAwardOptionsIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share-based compensation arrangement by share-based payment award, options, issued.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MinorityInterestOwnershipPercentageByParent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of equity interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MinorityInterestOwnershipPercentageByParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsidiary, Ownership Percentage, Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MinorityInterestOwnershipPercentageByParent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Indirect interest percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PayablesAndAccrualsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payables and Accruals [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PayablesAndAccrualsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payables and Accruals [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PayablesAndAccrualsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payables and accruals.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collaborative Arrangement and Arrangement Other than Collaborative [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Central Index Key</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CompensationQuotaAggregateAmountOfAdditionalFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Compensation Quota Aggregate Amount of Additional Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CompensationQuotaAggregateAmountOfAdditionalFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Compensation quota aggregate amount of additional fair value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CompensationQuotaAggregateAmountOfAdditionalFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Compensation quota aggregate amount of additional fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DecemberTwoThousandAndTwentyThreePurchaseAgreement2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">December Two Thousand And Twenty Three Purchase Agreement2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DecemberTwoThousandAndTwentyThreePurchaseAgreement2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">December Two Thousand And Twenty Three Purchase Agreement2</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PreFeasibilityStudyAndBeforeTheIssuanceOfTrialHarvestingLicenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre-feasibility Study and Before the Issuance of Trial Harvesting License</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PreFeasibilityStudyAndBeforeTheIssuanceOfTrialHarvestingLicenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Pre feasibility study and before the issuance of trial harvesting license.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ThirtySevenNoteEmbeddedDerivativeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">37N Note Embedded Derivative [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ThirtySevenNoteEmbeddedDerivativeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Thirty seven note embedded derivative</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of warrants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAdjustmentOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Adjustment of Warrants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Potential common shares excluded from EPS</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Excluded unvested restricted stock awards</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DecemberTwoThousandAndTwentyThreePurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">December two thousand and twenty three purchase agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfAdoptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingCostsAndExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Invoiced for technical services</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities [Abstract]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CapLatCapitalLatinoamericanoSADeCVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Caplat capital latinoamericano, S.A. de C.V. [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CapLatCapitalLatinoamericanoSADeCVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CapLat Capital Latinoamericano, S.A. de C.V. [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CapLatCapitalLatinoamericanoSADeCVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Caplat capital latinoamericano s a de c v.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CapLatCapitalLatinoamericanoSADeCVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">CapLat [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CapLatCapitalLatinoamericanoSADeCVMember_lbl" xlink:role="http://fasb.org/us-gaap/role/label/axisDefault">Caplat capital latinoamericano, S.A. de C.V.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CallOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Call Option [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CallOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SPA Written Call Options</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OwnershipPercentageInJointVenture_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ownership Percentage In Joint Venture</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OwnershipPercentageInJointVenture_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ownership percentage in joint venture.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DecemberTwoThousandAndTwentyThreePurchaseAgreement1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">December Two Thousand And Twenty Three Purchase Agreement1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DecemberTwoThousandAndTwentyThreePurchaseAgreement1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">December two thousand and twenty three purchase agreement1 member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total accrued expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Liabilities, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_OwnershipDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ownership [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Fiscal Year End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current Fiscal Year End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Long-Term Debt Instruments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Long-term Debt Instruments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SignificantExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Significant Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SignificantExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Significant expenses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SignificantExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Significant Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SignificantExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Significant Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EquityExchangeRightsInConnectionWithCorporateTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity exchange rights in connection with Corporate Transactions [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EquityExchangeRightsInConnectionWithCorporateTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity exchange rights in connection with corporate transactions.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EquityExchangeRightsInConnectionWithCorporateTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Exchange Rights in Connection with Corporate Transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment carrying value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Investment in unconsolidated entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentQuarterlyReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Quarterly Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarchTwoThousandTwentyThreeNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">March Two Thousand Twenty Three Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarchTwoThousandTwentyThreeNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">March two thousand twenty three notes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarchTwoThousandTwentyThreeNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">March 2023 Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReceivablesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Receivables [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, by Balance Sheet Grouping [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, State or Province</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OperatingLossCarryforwardsExpirationBeginningYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Operating loss carryforwards expiration beginning year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OperatingLossCarryforwardsExpirationBeginningYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Loss Carryforwards Expiration Beginning Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OperatingLossCarryforwardsExpirationBeginningYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net operating loss carryforwards expiration year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Number of Shares Unvested, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Number of Shares Unvested, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentySixThroughTwoThousandAndTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026 through 2027 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentySixThroughTwoThousandAndTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Loss Carryforwards Expiring Two Thousand And Twenty Six Through Two Thousand And Twenty Seven [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentySixThroughTwoThousandAndTwentySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Operating loss carryforwards expiring two thousand and twenty six through two thousand and twenty seven.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_EquityMethodInvesteeNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RisksAndUncertaintiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Risks and Uncertainties [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contract with Customer, Liability, Revenue Recognized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Indirect Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts Receivable [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Receivable [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_NoteConversionOptionTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Note Conversion Option Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_NoteConversionOptionTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Note conversion option two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_NoteConversionOptionTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">December 2023 Note Conversion Option</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Professional Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consultants contingent success fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Professional fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueOfTheObligation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of the obligation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueOfTheObligation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Of The Obligation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueOfTheObligation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value of the obligation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermLoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans payable-long term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermLoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Loans Payable, Noncurrent, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermLoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amount receivable related to a loss contingency</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermLoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Loans payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term debt measurement input</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Measurement Input</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Subsequent Event</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CICEquityExchangeAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CIC Equity Exchange Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CICEquityExchangeAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CIC Equity Exchange Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CICEquityExchangeAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">CIC Equity Exchange Agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Securities [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Antidilutive Securities [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetAtFairValueChangesInFairValueResultingFromChangesInAssumptions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset at fair value, changes in fair value resulting from changes in assumptions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetAtFairValueChangesInFairValueResultingFromChangesInAssumptions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset at Fair Value, Changes in Fair Value Resulting from Changes in Assumptions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cancellation/Expiration</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Cancellation/Expiration</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BismarckExplorationLicensePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bismarck Exploration License</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BismarckExplorationLicensePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bismarck Exploration License [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BismarckExplorationLicensePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bismarck exploration license policy text block</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt, interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Expense, Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Instrument, Unamortized Discount, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Unamortized Discount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Debt discount amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: Unamortized debt discount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_WarrantLiabilityOne_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">2022 Warrants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_WarrantLiabilityOne_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrant liabilities issued with equity (2022 Warrants)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_WarrantLiabilityOne_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant Liability One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_WarrantLiabilityOne_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Warrant liability one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CicLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CIC Limited1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CicLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">CIC Limited1.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CicLimitedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CIC Limited [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_NameOfMajorCustomerDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Customer [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrecognized tax benefits permanent deduction loss position</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_December2023NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">December 2023 Note [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_December2023NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">December2023 Note [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_December2023NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">December2023 Note [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherCommitmentsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Commitments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PayrollExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payroll expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PayrollExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payroll expenses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PayrollExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payroll Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PayrollExpenses_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payroll expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Consideration Transferred</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Business Combination, Consideration Transferred, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transaction values</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BackOfficeTechnicalAndSupportServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Back office technical and support services.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BackOfficeTechnicalAndSupportServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Back Office Technical and Support Services [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BackOfficeTechnicalAndSupportServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Back Office Technical and Support Services [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument maturity date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_JointVentureFormationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Joint Venture Formation [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_JointVentureFormationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Joint Venture</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Grant Date Fair Value, Granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EmployeeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EmployeeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsNonrecurringMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Nonrecurring [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsNonrecurringMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Nonrecurring [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_IncrementalCommonSharesAttributableToOtherDerivativeInstruments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incremental Common Shares Attributable To Other Derivative Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_IncrementalCommonSharesAttributableToOtherDerivativeInstruments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incremental common shares attributable to other cerivative instruments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_IncrementalCommonSharesAttributableToOtherDerivativeInstruments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dilutive effect of other derivative instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans payable, current portion</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: Current portion of loans payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Loans Payable, Current, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Payable, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SummaryOfSignificantAccountingPoliciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Significant Accounting Policies [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SummaryOfSignificantAccountingPoliciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of significant accounting policies.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarineServicesRevenue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Marine Services Revenue</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarineServicesRevenue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Marine services revenue</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarineServicesRevenue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Marine services revenue.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transactions [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Loss Carryforwards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net operating loss carryforwards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total accounts receivable and other, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Receivable, after Allowance for Credit Loss, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total accounts receivable, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts receivable, related party</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Accounts Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesAndLoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Loans payable, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesAndLoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes and Loans Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Weighted Average Grant Date Fair Value Unvested, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Weighted Average Grant Date Fair Value Unvested, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleOfStockRemainingOptionsToPurchaseOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock, Remaining Options to Purchase Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleOfStockRemainingOptionsToPurchaseOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sale of stock, remaining options to purchase outstanding.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleOfStockRemainingOptionsToPurchaseOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining options to purchase outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CommonStockIssuedAndExchangedSharesWithRelatedParty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock issued and exchanged with related party</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CommonStockIssuedAndExchangedSharesWithRelatedParty_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Issued and Exchanged Shares With Related Party</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CommonStockIssuedAndExchangedSharesWithRelatedParty_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock issued and exchanged shares with related party</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AccruedAggregateMemberInterestOfAdminstratorsAndOfficers_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Aggregate Member Interest Of Adminstrators And Officers</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AccruedAggregateMemberInterestOfAdminstratorsAndOfficers_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accrued aggregate member interest of adminstrators and officers.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AccruedAggregateMemberInterestOfAdminstratorsAndOfficers_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued aggregate of adminstrators and officers</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableGrossCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Receivable, before Allowance for Credit Loss, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableGrossCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsReceivableGrossCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Accounts receivable, gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementCompensationItemsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Compensation:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementCompensationItemsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Compensation Items [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_IncomeTaxesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Income taxes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_IncomeTaxesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Taxes [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_IncomeTaxesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskByBenchmarkAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk Benchmark [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnDerivativeInstrumentsNetPretax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnDerivativeInstrumentsNetPretax_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Change in derivative liabilities fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnDerivativeInstrumentsNetPretax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Derivative Instruments, Net, Pretax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnDerivativeInstrumentsNetPretax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gain (Loss) on Derivative Instruments, Net, Pretax, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnDerivativeInstrumentsNetPretax_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Change in fair value of derivative liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_IncrementalCommonSharesAttributableToOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incremental Common Shares Attributable To Options</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_IncrementalCommonSharesAttributableToOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incremental common shares attributable to options.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_IncrementalCommonSharesAttributableToOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dilutive effect of options</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CICLimited1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CIC Limited [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CICLimited1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">C I C Limited1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CICLimited1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Cic limited1.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchase Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Purchase Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Purchase agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TextBlockAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Text Block [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">INCOME/(LOSS)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net income from operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">NET INCOME (LOSS)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net (loss) income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average common shares outstanding - Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Weighted Average Number of Shares Outstanding, Basic, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted average number of common shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_IncomeTaxesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Income taxes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_IncomeTaxesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Taxes [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_IncomeTaxesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_WarrantLiabilityThree_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrant Liability Three</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_WarrantLiabilityThree_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Warrant liability three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_WarrantLiabilityThree_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">December 2023 Warrants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Plan Modification, Incremental Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Compensation quota, incremental value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfPrivatePlacement_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of private placement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfPrivatePlacement_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Issuance of Private Placement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Events</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyEightThroughTwoThousandAndThirtySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Operating Loss Carryforwards Expiring Two Thousand And Twenty Eight Through Two Thousand And Thirty Seven [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyEightThroughTwoThousandAndThirtySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Loss Carryforwards Expiring Two Thousand And Twenty Eight Through Two Thousand And Thirty Seven [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyEightThroughTwoThousandAndThirtySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2028 Through 2037 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transactions Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Cash_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Cash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AgreementTerminationFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Agreement Termination Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AgreementTerminationFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Agreement termination fees.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AgreementTerminationFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Termination fee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaEquityExchangeAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Oceanica Equity Exchange Agreements [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaEquityExchangeAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Oceanica Equity Exchange Agreements [Member].</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaEquityExchangeAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Oceanica Equity Exchange Agreements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Tranche Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Second tranche</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClassOfWarrantOrRightExpirationBeginningDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Warrants, expiration beginning date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClassOfWarrantOrRightExpirationBeginningDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Class of warrant or right expiration beginning date.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoSeasCapitalLpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Seas Capital Lp [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoSeasCapitalLpMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two seas capital lp.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EquityExchangeRatioPerCompensationQuota1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Exchange Ratio Per Compensation Quota 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EquityExchangeRatioPerCompensationQuota1_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity Exchange Ratio Per Compensation Quota 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Use of Estimates, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Use of Estimates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Method Investment [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Equity Method Investments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoThousandAndTwentyTwoWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022 Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoThousandAndTwentyTwoWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand And Twenty Two Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoThousandAndTwentyTwoWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand and twenty two warrants.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine2_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Address Line Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosures [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Measurements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Remaining future cash payments related to the financing liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease, Liability, to be Paid, Maturity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CustomerTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Customer Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CustomerTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Customer two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Components of Accrued Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Accrued Liabilities [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other current assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total other current assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total other current assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanMineralsLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ocean Minerals, LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanMineralsLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ocean Minerals LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanMineralsLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ocean minerals llc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PaidInKindInterestIntoDebtPrincipal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Paid in kind interest into capitalized principal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PaidInKindInterestIntoDebtPrincipal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Paid In Kind Interest Into Debt Principal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PaidInKindInterestIntoDebtPrincipal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Paid in kind interest into debt principal.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Equity Method Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income (loss) on equity method investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments and Hedging Activities Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentPeriodicPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Periodic Payment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentPeriodicPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Instrument, Periodic Payment, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentPeriodicPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument periodic payment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingCodmIndividualTitleAndPositionOrGroupOrCommitteeNameExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingOtherItemAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, Other Segment Item, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingOtherItemAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other segment items gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ownership percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Equity Method Investment Ownership Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ownership percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_Share-BasedCompensationArrangementByShare-BasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Cancelled in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_Share-BasedCompensationArrangementByShare-BasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share-based compensation arrangement by share-based payment award, equity instruments other than options, cancelled in period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_Share-BasedCompensationArrangementByShare-BasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Shares, Cancelled</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease, Liability, to be Paid, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of warrants or rights outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right, Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related and Nonrelated Parties [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCountryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Foreign [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCountryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign Country Member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignCountryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Foreign Tax Jurisdiction [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collateral Held [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PhosagmexSAPIDeCVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Phosagmex, S.A.P.I. de C.V. [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PhosagmexSAPIDeCVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Phosagmex, S.A.P.I. de C.V.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PhosagmexSAPIDeCVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Phosagmex, S.A.P.I. de C.V.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingStandardsUpdateExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_NonRestrictedCashBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non restricted cash balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_NonRestrictedCashBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non Restricted Cash Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_NonRestrictedCashBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non Restricted Cash Balance.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, City or Town</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EstimatedLitigationReserveLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Litigation financing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EstimatedLitigationReserveLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Estimated Litigation Reserve Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EstimatedLitigationReserveLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Estimated litigation reserve liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Reportable Segments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MemberUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Member Units [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MemberUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Member Interests</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Security Exchange Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security Exchange Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_JointVentureLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Joint Venture [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_JointVentureLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Joint venture.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_March2023NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">March 2023 Note [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_March2023NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">March2023 Note [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_March2023NoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">March2023 Note [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SignificantExpensesAndSegmentReportingOtherItemAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Significant Expenses and Other Segment Items</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SignificantExpensesAndSegmentReportingOtherItemAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Significant Expenses And Segment Reporting Other Item Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SignificantExpensesAndSegmentReportingOtherItemAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Significant expenses and segment reporting other item amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_CounterpartyNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Counterparty Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_CounterpartyNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Counterparty Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ThirdPartyConsultantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consultant</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ThirdPartyConsultantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Third Party Consultant [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ThirdPartyConsultantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Third party consultant.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Securities, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Antidilutive Securities, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders' Equity Note [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_InvestmentInUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment in unconsolidated entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_InvestmentInUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment In Unconsolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_InvestmentInUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment in unconsolidated entities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementBasisAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Basis [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Range [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Class of warrants or rights exercise price of warrants or rights</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right, Exercise Price of Warrants or Rights</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based compensation expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Share-based compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Period End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Period End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OdysseysCommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Odyssey's Common Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OdysseysCommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Odyssey's Common Stock [Member].</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Method Investments and Joint Ventures [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_TitleOfIndividualAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Title and Position [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Shares, Options exercisable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ConditionallyIssuableCommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conditionally issuable common stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ConditionallyIssuableCommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conditionally Issuable Common Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ConditionallyIssuableCommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Conditionally issuable common stock.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_VendorNotePayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vendor note payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_VendorNotePayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Vendor note payable [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_VendorNotePayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vendor note payable.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_VendorNotePayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vendor Note Payable [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalMarkToMarket_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">APIC at a fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalMarkToMarket_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments to Additional Paid in Capital, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Security, Excluded EPS Calculation [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VestingAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vesting [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleLeasebackTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale Leaseback Transaction [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OdysseyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Odyssey Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OdysseyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Odyssey notes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OdysseyNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Odyssey Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instruments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputExercisePriceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Exercise Price [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputExercisePriceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement Input, Exercise Price [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_NumberOfCustomers_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Customers</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_NumberOfCustomers_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of customers</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_NumberOfCustomers_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of customers.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PaymentOfTransaction-RelatedTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment of Transaction-related Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PaymentOfTransaction-RelatedTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payment of transaction-related taxes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PaymentOfTransaction-RelatedTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payment of transaction-related taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsGainLossLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments, Gain (Loss) [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AccruedExplorationLicenseFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exploration license fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AccruedExplorationLicenseFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Exploration License Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AccruedExplorationLicenseFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accrued exploration license fees.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaMexicoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Oceanica Mexico [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaMexicoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Oceanica Mexico.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted Stock Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average common shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Weighted average common shares outstanding - Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Securities Act File Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_LitigationFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Litigation Financing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_LitigationFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Litigation Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_LitigationFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Litigation financing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDepositLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Deposit Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDepositLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnest Money Deposit Advanced</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CoverAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cover [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Fair Values and Related Carrying Values of Financial Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prepaid Expense and Other Assets, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SalesRevenueNetMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sales Revenue, Net [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SalesRevenueNetMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Benchmark [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EstimatedDiscountDueToUncertaintyReinstatement_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Estimated Discount Due to Uncertainty Reinstatement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EstimatedDiscountDueToUncertaintyReinstatement_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Estimated discount due to uncertainty reinstatement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EstimatedDiscountDueToUncertaintyReinstatement_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated discount due to uncertainty reinstatement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of operating segment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Operating Segments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segment Reporting</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">General and Administrative Expense, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">General and Administrative Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">General expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">General and administrative expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_December2023WarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">December 2023 Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_December2023WarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">December 2023 Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_December2023WarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">December 2023 warrants.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenue from Contract with Customer, Including Assessed Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total revenue</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_NoticePeriodForOptionToPurchasePropertyPriorToLeaseExpirationTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notice Period for Option to Purchase Property Prior to Lease Expiration Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_NoticePeriodForOptionToPurchasePropertyPriorToLeaseExpirationTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notice period for option to purchase property prior to lease expiration term.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_NoticePeriodForOptionToPurchasePropertyPriorToLeaseExpirationTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notice period for option to purchase property prior to lease expiration term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Conversion price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt converted rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Convertible, Conversion Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity method investment realized gain loss on disposal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Method Investment, Realized Gain (Loss) on Disposal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Loss on equity method investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DecemberTwoThousandTwentythreeWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">December Two Thousand Twentythree Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DecemberTwoThousandTwentythreeWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">December two thousand twentythree warrants.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DecemberTwoThousandTwentythreeWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">December 2023 Warrants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositsAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositsAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deposits Assets, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">New Accounting Pronouncements, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounting Standards Not Yet Adopted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated Fair Value of Restricted Stock Award</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments, Gain (Loss) [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_OwnershipAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ownership [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_JohnDLongleyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">John D. Longley [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_JohnDLongleyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">John D. Longley.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_JointVenturesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Joint Ventures [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_JointVenturesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Joint ventures abstract</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CarryingReportedAmountFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reported Value Measurement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CarryingReportedAmountFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carrying Value [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_UnvestedRestrictedStockAwardsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unvested Restricted Stock Awards [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_UnvestedRestrictedStockAwardsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Unvested restricted stock awards member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_UnvestedRestrictedStockAwardsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unvested Restricted Stock Awards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentHoldingsScheduleOfInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Investment in Unconsolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentHoldingsScheduleOfInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Holdings, Schedule of Investments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarchTwoThousandAndTwentyThreeConversionOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">March 2023 Conversion Option [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarchTwoThousandAndTwentyThreeConversionOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">March Two Thousand And Twenty Three Conversion Option [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarchTwoThousandAndTwentyThreeConversionOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">March two thousand and twenty three conversion option.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentTransitionReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Transition Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset impairment charges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Impairment Charges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Asset Impairment Charges, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DeepSeaMineralCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">CIC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DeepSeaMineralCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Deep Sea Mineral Company.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DeepSeaMineralCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deep Sea Mineral Company [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DeepSeaMineralCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deep Sea Mineral Company, CIC, LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReceivableTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Receivable [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReceivableTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Receivable [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_UnitExchangeValuePerUnitNumerator_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unit Exchange Value per unit Numerator</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_UnitExchangeValuePerUnitNumerator_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Unit exchange value per unit numerator.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_UnitExchangeValuePerUnitNumerator_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unit exchange value per unit numerator</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LitigationStatusAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Litigation Status [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares used in computation &#8211; diluted:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net (loss) income per share:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Option, Activity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Stock Option Activity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stockholders' Equity/(Deficit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts and Financing Receivables [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Accounts, Notes, Loans and Financing Receivable [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockConsiderationReceivedPerTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock, Consideration Received Per Transaction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockConsiderationReceivedPerTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate purchase price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">NET (LOSS) INCOME attributable to Odyssey Marine Exploration, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net (Loss) Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Lease rent expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected dividend yield</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Risk free interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Year Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Year Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PhosagmexJointVentureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Phosagmex Joint Venture [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PhosagmexJointVentureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Phosagmex joint venture.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PhosagmexJointVentureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Phosagmex Joint Venture</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskBenchmarkDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk Benchmark [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleLeasebackTransactionDescriptionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale Leaseback Transaction, Description [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_Share-BasedCompensationArrangementsByShare-BasedPaymentAwardOptionsIssuedWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Issued, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_Share-BasedCompensationArrangementsByShare-BasedPaymentAwardOptionsIssuedWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share-based compensation arrangements by share-based payment award, options, issued, weighted average exercise price.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_Share-BasedCompensationArrangementsByShare-BasedPaymentAwardOptionsIssuedWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Exercise Price, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaMarineOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Oceanica marine operations.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaMarineOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Oceanica Marine Operations [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OceanicaMarineOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Oceanica Marine Operations [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EstimatedFairValueMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Estimated Fair Value Measurement Input</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EstimatedFairValueMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Estimated fair value measurement input.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EstimatedFairValueMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated fair value measurement input</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OdysseyNotePurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Odyssey Note Purchase Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OdysseyNotePurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Odyssey Note Purchase Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_OdysseyNotePurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Odyssey note purchase agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleLeasebackTransactionLeaseTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale-leaseback transaction term</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PendingLitigationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pending Litigation [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PendingLitigationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pending Litigation [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EarnestMoneyDeposit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deposits</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EarnestMoneyDeposit_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Deposit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EarnestMoneyDeposit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnest Money Deposit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EarnestMoneyDeposit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Earnest money deposit.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ValuationOfExercisableOption_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation of Exercisable Option</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ValuationOfExercisableOption_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Valuation of exercisable option.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ValuationOfExercisableOption_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valuation of exercisable option</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_December2023NotesAndDecember2023WarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">December 2023 Notes and December 2023 Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_December2023NotesAndDecember2023WarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">December 2023 Notes and December 2023 Warrants.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosures [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputSharePriceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Share Price [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputSharePriceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement Input, Share Price [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Future payments of short-term leases, 2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AggregateFinancingAmountProvidedByInvestors_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Aggregate Financing Amount Provided by Investors</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AggregateFinancingAmountProvidedByInvestors_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Aggregate financing amount provided by investors.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AggregateFinancingAmountProvidedByInvestors_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate financing amount provided by investors</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CompensationQuotaIncrementalValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Compensation Quota Incremental Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CompensationQuotaIncrementalValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Compensation quota incremental value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CompensationQuotaIncrementalValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Compensation quota incremental value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basic net income (loss) available to stockholders</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss) Available to Common Stockholders, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Income (Loss) Available to Common Stockholders, Basic, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Basic net (loss) income available to stockholders</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AfterTheIssuanceOfTrialHarvestingLicenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">After the Issuance of Trial Harvesting License [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AfterTheIssuanceOfTrialHarvestingLicenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">After the issuance of trial harvesting license.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AfterTheIssuanceOfTrialHarvestingLicenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">After the Issuance of Trial Harvesting License</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskPercentage1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Concentration risk, percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskPercentage1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk, Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Method Investments and Joint Ventures Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment in Unconsolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Revenues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Revenues_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Revenues, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Revenues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Title of 12(b) Security</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Title of 12(b) Security</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments and Hedging Activities Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Financial Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssuanceOfNewFunding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Issuance Of New Funding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssuanceOfNewFunding_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Issuance Of New Funding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssuanceOfNewFunding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of new funding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related and Nonrelated Parties [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Income Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Warrant or Right [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BeneficialOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Beneficial ownership percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BeneficialOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Beneficial Ownership Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BeneficialOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Beneficial ownership percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRedeemedOrCalledDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Redeemed or Called During Period, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRedeemedOrCalledDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares redeemed as per agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Future payments of short-term leases, remainder of 2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LegalEntityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Legal Entity [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Weighted Average Exercise Price Outstanding, Beginning</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Weighted Average Exercise Price, Outstanding, Ending</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CustomersOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Customers One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CustomersOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Customers one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CustomersOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customers One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Income Tax Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Recurring and Nonrecurring [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrecognized Tax Benefits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Unrecognized Tax Benefits, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Unrecognized Tax Benefits, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrecognized tax benefits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Frequency [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">New Accounting Pronouncements or Change in Accounting Principle [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Accounting Principle, Accounting Standards Update, Adoption Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trading Symbol</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading Symbol</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Related Party Transactions, by Related Party [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_DirectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mr.Pignatelli [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_DirectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Director [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PoplarFallsLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Poplar Falls LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PoplarFallsLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Poplar Falls Llc Member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Compensation and incentives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee-related Liabilities, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Employee-related Liabilities, Current, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EquityExchangeRatioPerCompensationQuota_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Exchange Ratio Per Compensation Quota</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EquityExchangeRatioPerCompensationQuota_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity Exchange Ratio Per Compensation Quota</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected life</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Payable and Accrued Liabilities Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Equity Method Investments [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Equity Method Investments [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_GreywolfOpportunitiesMasterFundIILPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Greywolf Opportunities Master Fund II LP [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_GreywolfOpportunitiesMasterFundIILPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Greywolf opportunities master fund II LP.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_GreywolfOpportunitiesMasterFundIILPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Greywolf Opportunities Master Fund II LP [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_Share-BasedCompensationArrangementByShare-BasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Grant Date Fair Value, Cancelled</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_Share-BasedCompensationArrangementByShare-BasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Cancelled, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Components [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Components [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Component [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Component [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleLeasebackTransactionDatedAprilFourTwoThousandAndTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale Leaseback Transaction Dated April Four Two Thousand and Twenty Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleLeasebackTransactionDatedAprilFourTwoThousandAndTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sale leaseback transaction dated April 4, 2023.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleLeasebackTransactionDatedAprilFourTwoThousandAndTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale-leaseback Transaction Dated April 4, 2023 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_UnitExchangeValuePerUnitDenominator_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unit exchange value per unit denominator</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_UnitExchangeValuePerUnitDenominator_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unit Exchange Value per unit Denominator</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_UnitExchangeValuePerUnitDenominator_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Unit Exchange Value per unit Denominator</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClassOfWarrantOrRightExercisedDuringThePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class Of Warrant Or Right, Exercised During The Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClassOfWarrantOrRightExercisedDuringThePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Class of warrant or right, exercised during the period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClassOfWarrantOrRightExercisedDuringThePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of warrant or right, exercised during the period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MajorCustomersAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Customer [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DebtToTrueInterestCostRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt to true interest cost ratio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DebtToTrueInterestCostRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt To True Interest Cost Ratio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DebtToTrueInterestCostRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt to true interest cost ratio.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AOMPIPESubscriptionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AOM PIPE Subscription Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AOMPIPESubscriptionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">AOM PIPE subscription agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AOMPIPESubscriptionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">AOM PIPE Subscription Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Maximum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Range [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Exercise Price, Exercised</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prepaid assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prepaid Expense, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Prepaid Expense, Current, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Value, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common stock - $0.0001 par value; 75,000,000 shares authorized; 58,368,659 and 55,771,913 issued and outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Diluted net (loss) income available to stockholders</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss) Available to Common Stockholders, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Diluted net (loss) income available to stockholders</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LitigationStatusDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Litigation Status [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EstimatedCapitalExpendituresToCommenceMiningOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated capital expenditures to commence mining operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EstimatedCapitalExpendituresToCommenceMiningOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Estimated Capital Expenditures To Commence Mining Operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EstimatedCapitalExpendituresToCommenceMiningOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Estimated capital expenditures to commence mining operations.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClaimsAmountAgreedToBeFinancedInConnectionWithLitigationToBeSettled_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Claims Agreed To Be Financed By The Funder For the Rightful Claims Due To The Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClaimsAmountAgreedToBeFinancedInConnectionWithLitigationToBeSettled_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Claims Amount Agreed To Be Financed In Connection With Litigation To Be Settled</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClaimsAmountAgreedToBeFinancedInConnectionWithLitigationToBeSettled_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Claims Payment Maximum Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClaimsAmountAgreedToBeFinancedInConnectionWithLitigationToBeSettled_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Claims payment maximum amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConsolidationPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidation, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConsolidationPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Principles of Consolidation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_GreywolfMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Greywolf [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_GreywolfMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Greywolf member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PayablesAndAccrualsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payables and Accruals [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PayablesAndAccrualsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payables and accruals.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets, Operating Loss Carryforwards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Deferred Tax Assets, Operating Loss Carryforwards, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net operating loss limited period carryforward</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Long-Lived Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of debt issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Debt Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected volatility</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ForeignExchangeIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Foreign Exchange Income (Expense)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ForeignExchangeIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Foreign exchange income (expense).</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ForeignExchangeIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign currency translation loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transaction [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesAndLoansReceivableLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts, Notes, Loans and Financing Receivable [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesAndLoansReceivableLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts, Notes, Loans and Financing Receivable [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Registrant Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentPrincipal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Periodic Payment, Principal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentPrincipal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentPrincipal_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Principal outstading repaid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CustomerConcentrationRiskMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Customer Concentration Risk [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Current Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Frequency [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Compensation Arrangement by Share-based Payment Award [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Common Stock, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Common Stock, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByLiabilityClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liability Class [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PreFeasibilityStudyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre-feasibility Study</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PreFeasibilityStudyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pre Feasibility Study [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PreFeasibilityStudyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Pre feasibility study.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AccountingStandardsUpdate2025-05Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update 2025-05 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_AccountingStandardsUpdate2025-05Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accounting Standards Update 2025-05.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClassOfWarrantOrRightExpirationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Warrants, expiration date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClassOfWarrantOrRightExpirationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class Of Warrant Or Right Expiration Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClassOfWarrantOrRightExpirationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Class of warrant or right expiration date.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Shares, Granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BusinessCombinationAndAssetAcquisitionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination And Asset Acquisition [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BusinessCombinationAndAssetAcquisitionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination and asset acquisition.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositLiabilitiesAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deposit Liabilities, Accrued Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositLiabilitiesAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Life , Options exercisable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LegalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Legal Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LegalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Legal advisers contingent success fee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EmergencyInjuryDisasterLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Emergency Injury Disaster Loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EmergencyInjuryDisasterLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Emergency Injury Disaster Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_EmergencyInjuryDisasterLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Emergency Injury Disaster Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares issued and sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Purchase of number of shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of stock, Number of shares issued in transaction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleLeasebackTransactionDatedJuneThirtyTwoThousandAndTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale Leaseback Transaction Dated June 30, 2023 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleLeasebackTransactionDatedJuneThirtyTwoThousandAndTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale Leaseback Transaction Dated June Thirty Two Thousand And Twenty Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SaleLeasebackTransactionDatedJuneThirtyTwoThousandAndTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sale Leaseback Transaction Dated June 30, 2023.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Loans Payable, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Loans payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Number of Shares, Vested</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings Per Share, Diluted, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Significant Segment Expenses, Segment Net Revenues, and the Segment Performance Measure, Net Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Segment Reporting Information, by Segment [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_TitleOfIndividualWithRelationshipToEntityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Title and Position [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">City Area Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Quarterly Financial Information [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Financial Information</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Debt Instrument, Face Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt instrument face amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate amount issuable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DecemberTwoThousandAndTwentyThreeConversionOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">December 2023 Conversion Option [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DecemberTwoThousandAndTwentyThreeConversionOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">December Two Thousand And Twenty Three Conversion Option [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DecemberTwoThousandAndTwentyThreeConversionOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">December two thousand and twenty three conversion option.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RepurchaseAgreementCounterpartyNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Counterparty Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RepurchaseAgreementCounterpartyNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Counterparty Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Revenue by Major Customers, by Reporting Segments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableUnamortizedLoanFeeCost_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: Unamortized deferred lender fee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableUnamortizedLoanFeeCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Unamortized Loan Cost (Fee)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ConcessionContributionAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concession contribution asset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ConcessionContributionAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Concession contribution asset.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PaidInCashCapitalizedPrincipal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Paid in cash capitalized principal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PaidInCashCapitalizedPrincipal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Paid In Cash Capitalized Principal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_PaidInCashCapitalizedPrincipal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Paid in cash capitalized principal.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_JointVentureTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Joint Venture [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_JointVentureTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Joint venture.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DecemberTwoThousandAndTwentyThreeWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">December 2023 Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DecemberTwoThousandAndTwentyThreeWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">December Two Thousand And Twenty Three Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_DecemberTwoThousandAndTwentyThreeWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">December two thousand and twenty three warrants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CompensationExpenseExcludingCostOfGoodAndServiceSold_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Compensation Expense, Excluding Cost of Good and Service Sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CompensationExpenseExcludingCostOfGoodAndServiceSold_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Conversion of debt to common stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Offering cost paid on sale of common stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments of Stock Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Equity issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FourWorldCapitalManagementLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Four World Capital Management Llc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FourWorldCapitalManagementLlcMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Four world capital management llc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Notes Payable, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Promissory note</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collateral Held [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdopted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Accounting Principle, Accounting Standards Update, Adopted [true false]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MergerAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Merger Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MergerAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Merger agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MergerAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Merger Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Other Current Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Other Current Assets [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Changes in Warrants Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoThousandTwentyWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2020 Warrants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoThousandTwentyWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Warrants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoThousandTwentyWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two Thousand Twenty Warrants.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueInterestsDeterminedPerCompensationQuota_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Interests Determined Per Compensation Quota</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueInterestsDeterminedPerCompensationQuota_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value interests determined per compensation quota</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueInterestsDeterminedPerCompensationQuota_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value interests determined per compensation quota</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ExploracionesOceanicasSDeRLDeCVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Exploraciones Oceanicas S. De R.L. De CV [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ExploracionesOceanicasSDeRLDeCVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Exploraciones Oceanicas S. De R.L. De CV [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ExploracionesOceanicasSDeRLDeCVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">EXO [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoSeasFundsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Two seas funds member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoSeasFundsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Seas Funds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_TwoSeasFundsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two seas funds.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxAuthorityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Jurisdiction [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxAuthorityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax Authority [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Interactive Data Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Interactive Data Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureItemAmountsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SummaryOfSignificantAccountingPoliciesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Significant Accounting Policies [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SummaryOfSignificantAccountingPoliciesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of significant accounting policies.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in fair value</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_NumberOfMemberUnitsIssuedForCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Member Units Issued for Common Stock</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Tax Identification Number</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FinanceLiabilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Liability [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FinanceLiabilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance liability member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Price</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClassOfWarrantOrRightExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Class of warrant or right, exercised.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClassOfWarrantOrRightExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of warrants or rights exercised</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleLeasebackTransactionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale Leaseback Transaction [Table]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Business and Basis of Presentation</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts Receivable and Other Related Party Receivables, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueDiscountRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Discount Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueDiscountRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value discount rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueDiscountRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value discount rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LocalPhoneNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Local Phone Number</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_BusinessCombinationAndAssetAcquisitionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination and asset acquisition.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SignificantExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Significant Expenses Abstract</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_SignificantExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Significant expenses abstract.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Policies [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_WorkingCapitalDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Working capital deficit.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_WorkingCapitalDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Working Capital Deficit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_WorkingCapitalDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Working capital deficit</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClassOfWarrantsExpiredUnexercised_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Class of warrants expired unexercised.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_ClassOfWarrantsExpiredUnexercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of warrants expired unexercised</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CICLimitedOptionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CIC Limited Option Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CICLimitedOptionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CIC Limited Option Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_CICLimitedOptionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">CIC limited option agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarkDGordonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mark D. Gordon [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_MarkDGordonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mark D. Gordon.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedProfessionalFeesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Professional services</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueOfConcessionRights_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of concession rights</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueOfConcessionRights_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Of Concession Rights</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FairValueOfConcessionRights_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value of concession rights.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FunderDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Funder [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="omex_FunderDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Funder Domain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Emerging Growth Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Emerging Growth Company</link:label>
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          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:to="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl"/>
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          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityIncorporationStateCountryCode" xlink:to="dei_EntityIncorporationStateCountryCode_lbl"/>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_ShareRedemptionPrice" xlink:to="omex_ShareRedemptionPrice_lbl"/>
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          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_FunderAxis" xlink:to="omex_FunderAxis_lbl"/>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="omex_NoteConversionOptionOne" xlink:to="omex_NoteConversionOptionOne_lbl"/>
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          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCurrentReportingStatus" xlink:to="dei_EntityCurrentReportingStatus_lbl"/>
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  <xsd:element id="omex_EquityExchangeRatioPerCompensationQuota1" name="EquityExchangeRatioPerCompensationQuota1" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="omex_OceanicaResourcesMexicoSDeRLDeCVMember" name="OceanicaResourcesMexicoSDeRLDeCVMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_TwoSeasCapitalLpMember" name="TwoSeasCapitalLpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_ScheduleOfFinancialInformationTableTextBlock" name="ScheduleOfFinancialInformationTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
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  <xsd:element id="omex_SaleOfStockRemainingOptionsToPurchaseOutstanding" name="SaleOfStockRemainingOptionsToPurchaseOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="omex_PreFeasibilityStudyMember" name="PreFeasibilityStudyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_ExploracionesOceanicasSDeRLDeCVMember" name="ExploracionesOceanicasSDeRLDeCVMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
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  <xsd:element id="omex_ForeignExchangeIncomeExpense" name="ForeignExchangeIncomeExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
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  <xsd:element id="omex_GreywolfMember" name="GreywolfMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_SummaryOfSignificantAccountingPoliciesTable" name="SummaryOfSignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_PaymentOfTransaction-RelatedTaxes" name="PaymentOfTransaction-RelatedTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_FairValueOfTheObligation" name="FairValueOfTheObligation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
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  <xsd:element id="omex_BeneficialOwnershipPercentage" name="BeneficialOwnershipPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
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  <xsd:element id="omex_IncomeTaxesTable" name="IncomeTaxesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_InitialBaseRent" name="InitialBaseRent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
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  <xsd:element id="omex_MarkDGordonMember" name="MarkDGordonMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_TwoThousandTwentyWarrantsMember" name="TwoThousandTwentyWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_CICLimitedOptionAgreementMember" name="CICLimitedOptionAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_FairValueChangeInConvertibleDebtGainLoss" name="FairValueChangeInConvertibleDebtGainLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_ThirdPartyConsultantMember" name="ThirdPartyConsultantMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_EstimatedLitigationReserveLiability" name="EstimatedLitigationReserveLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
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  <xsd:element id="omex_CompensationQuotaAggregateAmountOfAdditionalFairValue" name="CompensationQuotaAggregateAmountOfAdditionalFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
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  <xsd:element id="omex_ExplorationLicenseImpairments" name="ExplorationLicenseImpairments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="omex_ConditionallyIssuableCommonStockMember" name="ConditionallyIssuableCommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_OwnershipPercentageInJointVenture" name="OwnershipPercentageInJointVenture" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="omex_WarrantLiabilityOne" name="WarrantLiabilityOne" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
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  <xsd:element id="omex_ConcessionContributionAsset" name="ConcessionContributionAsset" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
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  <xsd:element id="omex_OMLEquityExchangeAgreementMember" name="OMLEquityExchangeAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_MarineServicesRevenue" name="MarineServicesRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
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  <xsd:element id="omex_EarnestMoneyDeposit" name="EarnestMoneyDeposit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
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  <xsd:element id="omex_InvestmentInUnconsolidatedEntities" name="InvestmentInUnconsolidatedEntities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="omex_TwoThousandAndTwentyTwoWarrantsMember" name="TwoThousandAndTwentyTwoWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_AggregateFinancingAmountProvidedByInvestors" name="AggregateFinancingAmountProvidedByInvestors" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
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  <xsd:element id="omex_AfcoInsuranceNotePayableMember" name="AfcoInsuranceNotePayableMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_OceanMineralsLlcMember" name="OceanMineralsLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_ValuationOfExercisableOption" name="ValuationOfExercisableOption" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_OceanicaMarineOperationsMember" name="OceanicaMarineOperationsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
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  <xsd:element id="omex_AfterTheIssuanceOfTrialHarvestingLicenseMember" name="AfterTheIssuanceOfTrialHarvestingLicenseMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_Share-BasedCompensationArrangementByShare-BasedPaymentAwardOptionsIssued" name="Share-BasedCompensationArrangementByShare-BasedPaymentAwardOptionsIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_AOMPIPESubscriptionAgreementMember" name="AOMPIPESubscriptionAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssuanceOfNewFunding" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssuanceOfNewFunding" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_NoteConversionOptionOne" name="NoteConversionOptionOne" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_Share-BasedCompensationArrangementsByShare-BasedPaymentAwardOptionsIssuedWeightedAverageExercisePrice" name="Share-BasedCompensationArrangementsByShare-BasedPaymentAwardOptionsIssuedWeightedAverageExercisePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_PrePublicFinancingAcquired" name="PrePublicFinancingAcquired" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentySixThroughTwoThousandAndTwentySevenMember" name="OperatingLossCarryforwardsExpiringTwoThousandAndTwentySixThroughTwoThousandAndTwentySevenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_SaleLeasebackCarryingValueOfFinancingLiabilities" name="SaleLeasebackCarryingValueOfFinancingLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_JointVentureLineItems" name="JointVentureLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_ThirtySevenNoteEmbeddedDerivativeMember" name="ThirtySevenNoteEmbeddedDerivativeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_BusinessCombinationAndAssetAcquisitionTable" name="BusinessCombinationAndAssetAcquisitionTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_FairValueInterestsDeterminedPerCompensationQuota" name="FairValueInterestsDeterminedPerCompensationQuota" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="omex_PhosagmexJointVentureMember" name="PhosagmexJointVentureMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_OdysseyNotesMember" name="OdysseyNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_BackOfficeTechnicalAndSupportServicesMember" name="BackOfficeTechnicalAndSupportServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_FunderAxis" name="FunderAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_OceanicaResourcesSDeRLMember" name="OceanicaResourcesSDeRLMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_SecuritiesPurchaseAgreementMember" name="SecuritiesPurchaseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_ClassOfWarrantOrRightExpirationBeginningDate" name="ClassOfWarrantOrRightExpirationBeginningDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_DecemberTwoThousandTwentyThreeNotesMember" name="DecemberTwoThousandTwentyThreeNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_December2023NotesAndDecember2023WarrantsMember" name="December2023NotesAndDecember2023WarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_SummaryOfSignificantAccountingPoliciesLineItems" name="SummaryOfSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_VendorNotePayableMember" name="VendorNotePayableMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_AmericanOceanMineralsMember" name="AmericanOceanMineralsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_NoticePeriodForOptionToPurchasePropertyPriorToLeaseExpirationTerm" name="NoticePeriodForOptionToPurchasePropertyPriorToLeaseExpirationTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_PurchasePriceOfWarrants" name="PurchasePriceOfWarrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="omex_AgreementTerminationFees" name="AgreementTerminationFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="omex_EstimatedFairValueMeasurementInput" name="EstimatedFairValueMeasurementInput" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="omex_DecemberTwoThousandAndTwentyThreePurchaseAgreement2Member" name="DecemberTwoThousandAndTwentyThreePurchaseAgreement2Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_PhosagmexSAPIDeCVMember" name="PhosagmexSAPIDeCVMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_FairValueInterestsPerCompensation" name="FairValueInterestsPerCompensation" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityOfWarrantsExercised" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityOfWarrantsExercised" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="omex_FinanceLeaseLiabilityPaymentsDueAfterYearTwo" name="FinanceLeaseLiabilityPaymentsDueAfterYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_CapLatCapitalLatinoamericanoSADeCVMember" name="CapLatCapitalLatinoamericanoSADeCVMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_UnitExchangeValuePerUnitNumerator" name="UnitExchangeValuePerUnitNumerator" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="omex_SignificantExpensesAndSegmentReportingOtherItemAmount" name="SignificantExpensesAndSegmentReportingOtherItemAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="omex_CustomersOneMember" name="CustomersOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_ShareRedemptionPrice" name="ShareRedemptionPrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="omex_AggregateAmountOfAdditionalFairValueOfUnderlyingAssets" name="AggregateAmountOfAdditionalFairValueOfUnderlyingAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="omex_EstimatedCapitalExpendituresToCommenceMiningOperations" name="EstimatedCapitalExpendituresToCommenceMiningOperations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="omex_CompensationQuotaIncrementalValue" name="CompensationQuotaIncrementalValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_EquityExchangeRatioPerCompensationQuota" name="EquityExchangeRatioPerCompensationQuota" type="srt-types:perUnitItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="omex_EstimatedDiscountDueToUncertaintyReinstatement" name="EstimatedDiscountDueToUncertaintyReinstatement" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="omex_MarchTwoThousandTwentythreeWarrantsMember" name="MarchTwoThousandTwentythreeWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_AccruedAggregateMemberInterestOfAdminstratorsAndOfficers" name="AccruedAggregateMemberInterestOfAdminstratorsAndOfficers" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_ClaimsAmountAgreedToBeFinancedInConnectionWithLitigationToBeSettled" name="ClaimsAmountAgreedToBeFinancedInConnectionWithLitigationToBeSettled" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_DecemberTwoThousandAndTwentyThreeConversionOptionMember" name="DecemberTwoThousandAndTwentyThreeConversionOptionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_MarchTwoThousandTwentyThreeNotesMember" name="MarchTwoThousandTwentyThreeNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_SaleLeasebackTransactionDatedJuneThirtyTwoThousandAndTwentyThreeMember" name="SaleLeasebackTransactionDatedJuneThirtyTwoThousandAndTwentyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_CommonStockIssuedAndExchangedSharesWithRelatedParty" name="CommonStockIssuedAndExchangedSharesWithRelatedParty" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_ElevenEmergencyInjuryDisasterLoanMember" name="ElevenEmergencyInjuryDisasterLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_NoteConversionOptionTwo" name="NoteConversionOptionTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_EquityExchangeRightsInConnectionWithCorporateTransactionsMember" name="EquityExchangeRightsInConnectionWithCorporateTransactionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_FunderDomain" name="FunderDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_CustomerTwoMember" name="CustomerTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_OperatingLossCarryforwardsExpiringTwoThousandAndTwentyEightThroughTwoThousandAndThirtySevenMember" name="OperatingLossCarryforwardsExpiringTwoThousandAndTwentyEightThroughTwoThousandAndThirtySevenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_EquityExchangeRightsInConnectionWithMexicanCorporateTransactionsMember" name="EquityExchangeRightsInConnectionWithMexicanCorporateTransactionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_TwoSeasFundsMember" name="TwoSeasFundsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_WorkingCapitalDeficit" name="WorkingCapitalDeficit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_BismarckExplorationLicensePolicyTextBlock" name="BismarckExplorationLicensePolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_WarrantLiabilityTwo" name="WarrantLiabilityTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_DebtToTrueInterestCostRatio" name="DebtToTrueInterestCostRatio" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="omex_FairValueDiscountRate" name="FairValueDiscountRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="omex_OtherAccountsReceivableMember" name="OtherAccountsReceivableMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_PayrollExpenses" name="PayrollExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="omex_TwoThousandTwentyTwoWarrantsMember" name="TwoThousandTwentyTwoWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_PaidInCashCapitalizedPrincipal" name="PaidInCashCapitalizedPrincipal" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_AccountingStandardsUpdate2025-05Member" name="AccountingStandardsUpdate2025-05Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_March2023WarrantsMember" name="March2023WarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_BeneficialOwnershipPercentageApplicableToWarrantsHeld" name="BeneficialOwnershipPercentageApplicableToWarrantsHeld" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="omex_ClassOfWarrantsExpiredUnexercised" name="ClassOfWarrantsExpiredUnexercised" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="omex_NumberOfMemberUnitsIssuedForCommonStock" name="NumberOfMemberUnitsIssuedForCommonStock" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_OperationsAndResearchExpenseExcludingCompensation" name="OperationsAndResearchExpenseExcludingCompensation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="omex_DebtInstrumentMaturityPeriod" name="DebtInstrumentMaturityPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_JointVenturesAbstract" name="JointVenturesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_December2023WarrantsMember" name="December2023WarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_AccruedExplorationLicenseFees" name="AccruedExplorationLicenseFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_MarchTwoThousandAndTwentyThreeNoteWarrantsMember" name="MarchTwoThousandAndTwentyThreeNoteWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_LoansPayableTextBlock" name="LoansPayableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_DecemberTwoThousandAndTwentyThreePurchaseAgreementMember" name="DecemberTwoThousandAndTwentyThreePurchaseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_GreywolfOpportunitiesMasterFundIILPMember" name="GreywolfOpportunitiesMasterFundIILPMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_PoplarFallsLlcMember" name="PoplarFallsLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_FairValueChangeInDebtInstrumentsGainLoss" name="FairValueChangeInDebtInstrumentsGainLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_DeepSeaMineralCompanyMember" name="DeepSeaMineralCompanyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_LitigationFinancingMember" name="LitigationFinancingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_DecemberTwoThousandAndTwentyThreeWarrantsMember" name="DecemberTwoThousandAndTwentyThreeWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_OdysseysCommonStockMember" name="OdysseysCommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_FinanceLiabilityMember" name="FinanceLiabilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_FairValueOfConcessionRights" name="FairValueOfConcessionRights" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="omex_IncomeTaxesLineItems" name="IncomeTaxesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_UnvestedRestrictedStockAwardsMember" name="UnvestedRestrictedStockAwardsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_March2023NotesAndMarch2023WarrantsMember" name="March2023NotesAndMarch2023WarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_Share-BasedCompensationArrangementByShare-BasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledWeightedAverageGrantDateFairValue" name="Share-BasedCompensationArrangementByShare-BasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledWeightedAverageGrantDateFairValue" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_DecemberTwoThousandTwentythreeWarrantsMember" name="DecemberTwoThousandTwentythreeWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_CICLLCOptionAgreementMember" name="CICLLCOptionAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_PercentageOfIssuedAndOutstandingMembershipOwned" name="PercentageOfIssuedAndOutstandingMembershipOwned" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="omex_Share-BasedCompensationArrangementByShare-BasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod" name="Share-BasedCompensationArrangementByShare-BasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_LeaseTerms" name="LeaseTerms" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityOfDebtConversionToEquity" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityOfDebtConversionToEquity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="omex_OdysseyNotePurchaseAgreementMember" name="OdysseyNotePurchaseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_PreFeasibilityStudyAndBeforeTheIssuanceOfTrialHarvestingLicenseMember" name="PreFeasibilityStudyAndBeforeTheIssuanceOfTrialHarvestingLicenseMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_EmergencyInjuryDisasterLoanMember" name="EmergencyInjuryDisasterLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_OceanicaEquityExchangeAgreementsMember" name="OceanicaEquityExchangeAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_WarrantLiabilityThree" name="WarrantLiabilityThree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="omex_JointVentureTable" name="JointVentureTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_MarchTwoThousandAndTwentyThreeConversionOptionMember" name="MarchTwoThousandAndTwentyThreeConversionOptionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_DecemberTwoThousandAndTwentyThreePurchaseAgreement1Member" name="DecemberTwoThousandAndTwentyThreePurchaseAgreement1Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_CICEquityExchangeAgreementMember" name="CICEquityExchangeAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_CICLimited1Member" name="CICLimited1Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_MergerAgreementMember" name="MergerAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="omex_ClassOfWarrantOrRightExercised" name="ClassOfWarrantOrRightExercised" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="omex_FourWorldCapitalManagementLlcMember" name="FourWorldCapitalManagementLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
</xsd:schema>
