| Species | Recipient region | Date of the first record | |
|---|
| Cordylophora caspia | Ireland | To 1844 |  |
| Cordylophora caspia | France / Celtic seas | 1901 | |
| Cordylophora caspia | Estonia | 1801 - 1850 | |
| Cordylophora caspia | Finland | 1801 - 1889 | |
| Cordylophora caspia | Latvia | 1801 - 1899 | |
| Cordylophora caspia | Lithuania | 1801 - 1899 | |
| Cordylophora caspia | Poland | 1801 - 1850 | |
| Cordylophora caspia | Russia / Baltic Sea / Kaliningrad area | 1860 - 1870 | |
| Cordylophora caspia | Sweden / Baltic Sea | 1810 | |
| Cordylophora caspia | Sweden / North Sea | 1895 - 1971 | |
| Cordylophora caspia | Netherlands | 1884 | |
| Cordylophora caspia | Belgium | 1905 | |
| Cordylophora caspia | Denmark / Baltic Sea | 1891 - 1899 | |
| Cordylophora caspia | Denmark / North Sea | 1895 | |
| Cordylophora caspia | Germany / North Sea | 1858 | |
| Cordylophora caspia | Germany / Baltic Sea | 1858 | |
| Cordylophora caspia | Italy / Adriatic Sea | 1978 | |
| Cordylophora caspia | Italy / Western Mediterranean | 1978 | |
| Cordylophora caspia | Ukraine / Black Sea | 1950 - 1959 | |
| Cordylophora caspia | Norway / North Sea | 1985 | |
| Cordylophora caspia | Italy / Central Mediterranean | 1978 | |
| Cordylophora caspia | United Kingdom (Britain) / Celtic seas | | |
| Cordylophora caspia | United Kingdom (Britain) / English Channel | | |
| Cordylophora caspia | United Kingdom (Britain) / North Sea | | |
| Cordylophora caspia | Russia / Baltic Sea / St. Petersburg area | 1979 | |
| Cordylophora caspia | France / English Channel | To 1901 | |
| Cordylophora caspia | Portugal / Iberian Coastal | To 1983 | |
| Cordylophora caspia | France / Biscay Gulf | 1901 | |
