| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Atlantic Ocean | Sea/Bay/Gulf | native | 1744 |
| South Sandwich Islands | Sea/Bay/Gulf | native | 1744 |
| Southern Ocean | sea/bay/gulf | native | 1744 |
| Tristan Gough | Sea/Bay/Gulf | native | 1756 |
| Tristan Gough - province | Sea/Bay/Gulf | native | 1756 |
| Weddell Sea | Sea/Bay/Gulf | native | 1744 |