| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Atlantic Ocean | Sea/Bay/Gulf | native | 683 |
| Baltic Sea | Sea/Bay/Gulf | native | 36252 |
| British islands basins | River (basin) | native | 59043 |
| Bug | River (basin) | native | 59043 |
| Caspian Sea | Lake | native | 59043 |
| Central Danube | River (basin) | native | 59043 |
| Central Dnieper | River (basin) | native | 59043 |
| Desna | River (basin) | native | 59043 |
| Dnester | River (basin) | native | 59043 |
| Drava River | River (basin) | native | 59043 |
| Elbe River | River (basin) | native | 54732 |
| Garonne | River (basin) | native | 30578 |
| Goryn | River (basin) | native | 59043 |
| Kara Sea | Sea/Bay/Gulf | native | 124011 |
| Lake Peipus | Lake | native | 122793 |
| Loire | River (basin) | native | 30578 |
| Lower Danube | River (basin) | native | 59043 |
| Lower Prypiats | River (basin) | native | 59043 |
| Mediterranean Sea | Sea/Bay/Gulf | native | 27118 |
| Neman (Niamunas) River | River (basin) | native | 59043 |
| Northern Atlanto-Baltic river drainages and lakes | River (basin) | native | 59043 |
| Norwegian Sea | Sea/Bay/Gulf | native | 683 |
| Oder | River (basin) | native | 59043 |
| Onega River | River (basin) | native | 59043 |
| Palearctic | Zoogeographic realm | endemic | 683 |
| Prut | River (basin) | native | 59043 |
| Rhine | River (basin) | native | 30578 |
| Rhône | River (basin) | native | 30578 |
| Sava River | River (basin) | native | 59043 |
| Seine | River (basin) | native | 30578 |
| Soca | River (basin) | native | 59043 |
| Southern Baltic Coastal river drainages and lakes | River (basin) | native | 59043 |
| Teterev | River (basin) | native | 59043 |
| Tisza | River (basin) | native | 59043 |
| Upper Danube | River (basin) | native | 59043 |
| Upper Dnieper | River (basin) | native | 59043 |
| Upper Prypiats | River (basin) | native | 59043 |
| Upper Volga | River (basin) | native | 59043 |
| Ural | River (basin) | native | 26334 |
| Vistula | River (basin) | native | 59043 |
| Volga | River (basin) | native | 26334 |
| Weser | River (basin) | native | 59043 |