| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Adriatic Sea | Sea/Bay/Gulf | native | 112654 |
| Atlantic Ocean | Sea/Bay/Gulf | native | 437 |
| Baltic Sea | Sea/Bay/Gulf | native | 128574 |
| Barents Sea | Sea/Bay/Gulf | native | 112633 |
| Black Sea | Sea/Bay/Gulf | native | 112662 |
| Black Sea - province | Sea/Bay/Gulf | native | 112662 |
| Celtic Seas | Sea/Bay/Gulf | native | 113937 |
| Celtic-Biscay Shelf | Sea/Bay/Gulf | native | 96498 |
| Central Arctic | Sea/Bay/Gulf | native | 112643 |
| Crimean Peninsula | River (basin) | native | 112744 |
| English Channel | Sea/Bay/Gulf | native | 113955 |
| Galician Shelf | Sea/Bay/Gulf | native | 112640 |
| German Bight | Sea/Bay/Gulf | native | 96459 |
| Irish Sea | Sea/Bay/Gulf | native | 112652 |
| Lusitanian | sea/bay/gulf | native | 112636 |
| Mediterranean Sea | Sea/Bay/Gulf | native | 437 |
| North Sea | Sea/Bay/Gulf | native | 120909 |
| Northern and Central Red Sea | Sea/Bay/Gulf | native | 113963 |
| Northern European Seas | Sea/Bay/Gulf | native | 112636 |
| Norwegian Sea | Sea/Bay/Gulf | native | 112643 |
| Persian Gulf | Sea/Bay/Gulf | questionable | 107716 |
| Saharan Upwelling | Sea/Bay/Gulf | native | 74416 |
| Sahelian Upwelling | Sea/Bay/Gulf | native | 112667 |
| Sea of Marmara | Sea/Bay/Gulf | native | 112750 |
| Somali/Arabian | sea/bay/gulf | questionable | 107716 |
| Southern Norway | Sea/Bay/Gulf | native | 112643 |
| Temperate Northern Atlantic | sea/bay/gulf | native | 437 |
| Tropical Atlantic | sea/bay/gulf | native | 112667 |
| Tunisian Plateau/Gulf of Sidra | Sea/Bay/Gulf | native | 106635 |
| West African Transition | sea/bay/gulf | native | 112667 |
| Western Indo-Pacific | sea/bay/gulf | questionable | 107716 |
| Western Mediterranean | Sea/Bay/Gulf | native | 112667 |