| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Atlantic Ocean | Sea/Bay/Gulf | native | 429 |
| Baltic Sea | Sea/Bay/Gulf | native | 429 |
| Black Sea | Sea/Bay/Gulf | native | 3682 |
| Black Sea - province | Sea/Bay/Gulf | native | 3682 |
| English Channel | Sea/Bay/Gulf | native | 2255 |
| Mediterranean Sea | Sea/Bay/Gulf | native | 429 |
| North Sea | Sea/Bay/Gulf | native | 2255 |
| Northern European Seas | Sea/Bay/Gulf | native | 96103 |
| Pacific Ocean | Sea/Bay/Gulf | questionable | 81541 |
| San Miguel Bay | Sea/Bay/Gulf | questionable | 81541 |
| Temperate Northern Atlantic | sea/bay/gulf | native | 429 |