| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Adriatic Sea | Sea/Bay/Gulf | native | 112498 |
| Aegean Sea | Sea/Bay/Gulf | native | 125090 |
| Antarctica | Sea/Bay/Gulf | native | 89905 |
| Arctic | Sea/Bay/Gulf | introduced | 1667 |
| Arctic - province | Sea/Bay/Gulf | introduced | 1667 |
| Atlantic Ocean | Sea/Bay/Gulf | native | 7982 |
| Black Sea | Sea/Bay/Gulf | native | 2754 |
| Black Sea - province | Sea/Bay/Gulf | native | 2754 |
| Central Arctic | Sea/Bay/Gulf | native | 310 |
| Cold Temperate Northeast Pacific | sea/bay/gulf | introduced | 1667 |
| Heard and Macdonald Islands | Sea/Bay/Gulf | introduced | 74657 |
| Indian Ocean | Sea/Bay/Gulf | native | 310 |
| Lusitanian | sea/bay/gulf | native | 74416 |
| Mediterranean Sea | Sea/Bay/Gulf | native | 2754 |
| North Sea | Sea/Bay/Gulf | native | 3477 |
| Northern European Seas | Sea/Bay/Gulf | native | 112504 |
| Pacific Ocean | Sea/Bay/Gulf | native | 310 |
| Saharan Upwelling | Sea/Bay/Gulf | native | 74416 |
| Sea of Marmara | Sea/Bay/Gulf | native | 2754 |
| South China Sea | Sea/Bay/Gulf | introduced | 124694 |
| Southern China | Sea/Bay/Gulf | introduced | 124694 |
| Southern Ocean | sea/bay/gulf | introduced | 74657 |
| Subantarctic Islands | sea/bay/gulf | introduced | 74657 |
| Temperate Northern Atlantic | sea/bay/gulf | native | 2754 |
| Temperate Northern Pacific | sea/bay/gulf | introduced | 310 |
| Tunisian Plateau/Gulf of Sidra | Sea/Bay/Gulf | native | 74416 |
| Western Mediterranean | Sea/Bay/Gulf | native | 74416 |
| Western Turkey | River (basin) | native | 125090 |