Ecosystems where Thunnus obesus occurs
n = 55
| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Agulhas Current | Sea/Bay/Gulf | native | 168 |
| Andaman Sea | Sea/Bay/Gulf | native | 168 |
| Arabian Sea | Sea/Bay/Gulf | native | 168 |
| Atlantic Ocean | Sea/Bay/Gulf | native | 168 |
| Azores Islands | Sea/Bay/Gulf | native | 168 |
| Bay of Bengal | Sea/Bay/Gulf | native | 168 |
| Benguela Current | Sea/Bay/Gulf | native | 168 |
| Bermuda | Sea/Bay/Gulf | native | 168 |
| California Current | Sea/Bay/Gulf | native | 168 |
| Canary Current | Sea/Bay/Gulf | native | 168 |
| Cape Verde | Sea/Bay/Gulf | native | 94080 |
| Caribbean Sea | Sea/Bay/Gulf | native | 168 |
| Coral Sea and GBR | Sea/Bay/Gulf | native | 168 |
| Davao Gulf | Sea/Bay/Gulf | native | 43437 |
| East Brazil Shelf | Sea/Bay/Gulf | native | 168 |
| East Central Australian Shelf | Sea/Bay/Gulf | native | 6390 |
| Great Barrier Reef | Sea/Bay/Gulf | native | 168 |
| Guinea Current | Sea/Bay/Gulf | native | 168 |
| Gulf of Aden | Sea/Bay/Gulf | native | 5450 |
| Iberian Coastal | Sea/Bay/Gulf | native | 168 |
| Indian Ocean | Sea/Bay/Gulf | native | 168 |
| Indonesian Sea | Sea/Bay/Gulf | native | 168 |
| Insular Pacific-Hawaiian | Sea/Bay/Gulf | native | 168 |
| Kermadec Island | Sea/Bay/Gulf | native | 106682 |
| Kuroshio Current | Sea/Bay/Gulf | native | 559 |
| Lagonoy Gulf | Sea/Bay/Gulf | native | 45261 |
| Leyte Gulf | Sea/Bay/Gulf | native | 31411 |
| Mediterranean Sea | Sea/Bay/Gulf | introduced | 124855 |
| Milne Bay | Sea/Bay/Gulf | native | 41468 |
| Nero Seamount | Seamount | stray | 35722 |
| New Zealand Shelf | Sea/Bay/Gulf | native | 5755 |
| North Australian Shelf | Sea/Bay/Gulf | native | 6390 |
| North Brazil Shelf | Sea/Bay/Gulf | native | 168 |
| Northeast U.S. Continental Shelf | Sea/Bay/Gulf | native | 168 |
| Pacific Central-American Coastal | Sea/Bay/Gulf | native | 13613 |
| Pacific Ocean | Sea/Bay/Gulf | native | 168 |
| Peru-Galapagos Waters | Sea/Bay/Gulf | native | 168 |
| Polynesian Waters | Sea/Bay/Gulf | native | 168 |
| Raita Bank | Seamount | stray | 35722 |
| Rapa-Pitcairn | Sea/Bay/Gulf | native | 41650 |
| Scotian Shelf | Sea/Bay/Gulf | native | 7251 |
| Socotra Archipelago | Sea/Bay/Gulf | native | 37631 |
| Somali Coastal Current | Sea/Bay/Gulf | native | 168 |
| South Brazil Shelf | Sea/Bay/Gulf | native | 168 |
| South China Sea | Sea/Bay/Gulf | native | 36648 |
| South West Australian Shelf | Sea/Bay/Gulf | native | 6390 |
| Southeast U.S. Continental Shelf | Sea/Bay/Gulf | native | 7251 |
| Southern Palawan | Sea/Bay/Gulf | native | 114805 |
| Sulu-Celebes Sea | Sea/Bay/Gulf | native | 168 |
| Tahiti I. | Sea/Bay/Gulf | native | 168 |
| Tasman Sea | Sea/Bay/Gulf | native | 168 |
| Trindade Island | Sea/Bay/Gulf | native | 84275 |
| West Central Australian Shelf | Sea/Bay/Gulf | native | 6390 |
| Western Mediterranean | Sea/Bay/Gulf | introduced | 124855 |
| Yellow Sea | Sea/Bay/Gulf | native | 168 |