| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Aegean Sea | Sea/Bay/Gulf | native | 113897 |
| Amvrakikos Gulf | Sea/Bay/Gulf | native | 113897 |
| Atlantic Ocean | Sea/Bay/Gulf | native | 6733 |
| Balearic basins | River (basin) | native | 59043 |
| Balearic Islands | Sea/Bay/Gulf | native | 95727 |
| Balkan river drainages and lakes | River (basin) | native | 59043 |
| Balkanabat basin | River (basin) | native | 59043 |
| Bay of Biscay river drainages and lakes | River (basin) | native | 59043 |
| Black Sea | Sea/Bay/Gulf | native | 6733 |
| Bug | River (basin) | native | 59043 |
| Caspian Sea | Lake | native | 39702 |
| Central Turkey river drainages and lakes | River (basin) | native | 59043 |
| Corsica basins | River (basin) | native | 59043 |
| Corsica Island | Sea/Bay/Gulf | native | 96325 |
| Cote Azur | River (basin) | native | 59043 |
| Crete Island | Sea/Bay/Gulf | native | 113897 |
| Crimean Peninsula | River (basin) | native | 59043 |
| Cyprus basins | River (basin) | native | 59043 |
| Danube | River (basin) | native | 59043 |
| Danube Delta | River (basin) | native | 59043 |
| Dnester | River (basin) | native | 59043 |
| Dnieper | River (basin) | native | 59043 |
| Dnieper-Bug Liman | River (basin) | native | 59043 |
| Don | River (basin) | native | 26334 |
| Don Delta | River (basin) | native | 59043 |
| Douro | River (basin) | native | 59043 |
| Eastern Black Sea | River (basin) | native | 59043 |
| Eastern Caspian Sea river drainages and lakes | River (basin) | native | 59043 |
| Eastern Mediterranean river drainages and lakes | River (basin) | native | 59043 |
| Ebro | River (basin) | native | 59043 |
| Greek islands basins | River (basin) | native | 59043 |
| Iberian Coastal | Sea/Bay/Gulf | native | 40227 |
| Iberian main basins | River (basin) | native | 59043 |
| Ionian Sea | Sea/Bay/Gulf | native | 113897 |
| Italy main basins | River (basin) | native | 59043 |
| Krinka | River (basin) | native | 59043 |
| Kuban River | River (basin) | native | 58296 |
| Lower Danube | River (basin) | native | 59043 |
| Lower Dnieper | River (basin) | native | 59043 |
| Lower Volga | River (basin) | native | 59043 |
| Mediterranean Sea | Sea/Bay/Gulf | native | 683 |
| North Aegean | Sea/Bay/Gulf | native | 113897 |
| Northern Caspian Sea river drainages and lakes | River (basin) | native | 59043 |
| Palearctic | Zoogeographic realm | native | 683 |
| Po | River (basin) | native | 59043 |
| Prut | River (basin) | native | 59043 |
| Rhône | River (basin) | native | 59043 |
| Rud e Kal e Suhr | River (basin) | native | 59043 |
| Sakarya Nehri | River (basin) | native | 59043 |
| Sal | River (basin) | native | 59043 |
| Sarata | River (basin) | native | 59043 |
| Sardinia basins | River (basin) | native | 59043 |
| Sardinia Island | Sea/Bay/Gulf | native | 13729 |
| Sava River | River (basin) | native | 59043 |
| Sea of Azov | Sea/Bay/Gulf | native | 26334 |
| Sea of Azov river drainages and lakes | River (basin) | native | 59043 |
| Sea of Marmara | Sea/Bay/Gulf | native | 57855 |
| Sicily basins | River (basin) | native | 59043 |
| Sicily Island | Sea/Bay/Gulf | native | 13729 |
| South Aegean | Sea/Bay/Gulf | native | 113897 |
| Southern Caspian Sea river drainages and lakes | River (basin) | native | 59043 |
| Syvash abo Gnyle more | River (basin) | native | 59043 |
| Thermaikos Gulf | Sea/Bay/Gulf | native | 113897 |
| Ural | River (basin) | native | 59043 |
| Volga | River (basin) | native | 58297 |
| Western Caspian Sea river drainages and lakes | River (basin) | native | 59043 |
| Yenice Irmagi | River (basin) | native | 59043 |