v3.26.3
Document And Entity Information
6 Months Ended
Jun. 30, 2026
Document Information [Line Items]  
Document Type 6-K
Entity File Number 001-33283
Entity Registrant Name EUROSEAS LTD.
Entity Address, Address Line One 4 Messogiou & Evropis Street
Entity Address, Postal Zip Code 151 24
Entity Address, City or Town Maroussi
Entity Address, Country GR
Document Period End Date Jun. 30, 2026
Entity Central Index Key 0001341170
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2026
Document Fiscal Period Focus Q2
Amendment Flag false