| Species | Recipient region | Date of the first record | |
|---|
| Codium fragile subsp. fragile | Greece / Central Mediterranean | 1985 |  |
| Codium fragile subsp. fragile | Greece / Eastern Mediterranean | 1992 | |
| Codium fragile subsp. fragile | France / Western Mediterranean | 1946 | |
| Codium fragile subsp. fragile | Ireland | 1941 | |
| Codium fragile subsp. fragile | United Kingdom (Britain) / English Channel | 1891 | |
| Codium fragile subsp. fragile | United Kingdom (Britain) / Celtic seas | 1891 | |
| Codium fragile subsp. fragile | France / Celtic seas | 1946 | |
| Codium fragile subsp. fragile | United Kingdom (Britain) / North Sea / Orkney Islands | From 1960 | |
| Codium fragile subsp. fragile | Netherlands | 1900 | |
| Codium fragile subsp. fragile | Belgium | 1939 | |
| Codium fragile subsp. fragile | Denmark / North Sea | 1920 | |
| Codium fragile subsp. fragile | Germany / North Sea | 1930 | |
| Codium fragile subsp. fragile | Denmark / Baltic Sea | 1920 | |
| Codium fragile subsp. fragile | Italy / Adriatic Sea | 1978 | |
| Codium fragile subsp. fragile | Italy / Western Mediterranean | 1978 - 1987 | |
| Codium fragile subsp. fragile | Turkey / Black Sea | From 1983 | |
| Codium fragile subsp. fragile | Norway / Barents Sea | 1946 | |
| Codium fragile subsp. fragile | Norway / Norwegian Sea | 1946 | |
| Codium fragile subsp. fragile | Norway / North Sea | 1946 | |
| Codium fragile subsp. fragile | Italy / Central Mediterranean | 1973 | |
| Codium fragile subsp. fragile | France / Biscay Gulf | 1946 | |
| Codium fragile subsp. fragile | Spain / Iberian Coastal | To 1957 | |
| Codium fragile subsp. fragile | Spain / Canary Islands | To 2004 | |
| Codium fragile subsp. fragile | Portugal / Azores | 1993 | |
| Codium fragile subsp. fragile | Portugal / Iberian Coastal | 2005 | |
| Codium fragile subsp. fragile | Iceland | 1974 | |
| Codium fragile subsp. fragile | France / North Sea | 1940 | |
| Codium fragile subsp. fragile | France / English Channel | 1940 | |
| Codium fragile subsp. fragile | Australia / Bass strait | 1997 | |
