| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Atlantic Ocean | Sea/Bay/Gulf | native | 5217 |
| Caribbean Sea | Sea/Bay/Gulf | native | 3722 |
| Celestún Biosphere Reserve | Sea/Bay/Gulf | questionable | 74908 |
| Chesapeake Bay | Sea/Bay/Gulf | Native | 93252 |
| East Brazil Shelf | Sea/Bay/Gulf | native | 5217 |
| Gulf of Mexico | Sea/Bay/Gulf | questionable | 276 |
| Laguna de Términos | Lagoon | questionable | 79080 |
| North Brazil Shelf | Sea/Bay/Gulf | native | 5217 |
| South Brazil Shelf | Sea/Bay/Gulf | native | 5217 |
| Southeast U.S. Continental Shelf | Sea/Bay/Gulf | native | 3722 |