0001798562 2026-03-27 2026-03-27 0001798562 TMC:TMCCommonShareswithoutparvalueMember 2026-03-27 2026-03-27 0001798562 TMC:RedeemablewarrantseachwholewarrantTMCCommonShareeachatanexercisepriceofdollar1150pershareMember 2026-03-27 2026-03-27 false 0001798562 TMC the metals Co Inc. 00-0000000 8-K 2026-03-27 A1 001-39281 1111 West Hastings Street 15th Floor Vancouver BC V6E 2J3 888 458-3420 false false false false TMC Common Shares without par value TMC NASDAQ Redeemable warrants, each whole warrant exercisable for one TMC Common Share, each at an exercise price of $11.50 per share TMCWW NASDAQ true false