| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Adriatic Sea | Sea/Bay/Gulf | native | 128539 |
| Arctic | Sea/Bay/Gulf | native | 118443 |
| Arctic - province | Sea/Bay/Gulf | native | 118443 |
| Atlantic Ocean | Sea/Bay/Gulf | native | 124582 |
| Baltic Sea | Sea/Bay/Gulf | native | 124582 |
| Beaufort Sea | Sea/Bay/Gulf | native | 121105 |
| Beaufort Sea - continental coast and shelf | Sea/Bay/Gulf | native | 121105 |
| Black Sea | Sea/Bay/Gulf | native | 128519 |
| Black Sea - province | Sea/Bay/Gulf | native | 128519 |
| Caspian Sea | Lake | native | 356 |
| Cold Temperate Northeast Pacific | sea/bay/gulf | native | 94965 |
| Lusitanian | sea/bay/gulf | native | 356 |
| Mediterranean Sea | Sea/Bay/Gulf | native | 128539 |
| North Sea | Sea/Bay/Gulf | native | 96350 |
| Northern European Seas | Sea/Bay/Gulf | native | 356 |
| Pacific Ocean | Sea/Bay/Gulf | native | 94965 |
| Puget Sound | Sea/Bay/Gulf | native | 94798 |
| Puget Trough/Georgia Basin | Sea/Bay/Gulf | native | 94965 |
| Salish Sea | Sea/Bay/Gulf | native | 93905 |
| Strait of Georgia | Sea/Bay/Gulf | native | 94965 |
| Temperate Northern Atlantic | sea/bay/gulf | native | 356 |
| Temperate Northern Pacific | sea/bay/gulf | native | 356 |
| White Sea | Sea/Bay/Gulf | native | 121739 |