| Species |
Recipient region |
Date of the first record |
|
| Antithamnion hubbsii | France / Biscay Gulf | 2011 |  |
| Antithamnion hubbsii | France / English Channel | 2018 | |
| Antithamnion hubbsii | France / Western Mediterranean | 1988 | |
| Antithamnion hubbsii | Norway / North Sea | To 2007 | |
| Antithamnion nipponicum | Italy / Adriatic Sea | 1994 | |
| Antithamnion nipponicum | Norway / North Sea | 2007 | |
| Antithamnion nipponicum | Portugal / Azores | 1989 | |
| Antithamnion nipponicum | Portugal / Iberian Coastal | From 2008 | |
| Antithamnion nipponicum | United Kingdom (Britain) / North Sea / Orkney Islands | 2020 | |
| Antithamnion pectinatum | France / Western Mediterranean | 1983 | |
| Antithamnion pectinatum | Portugal / Azores | To 1994 | |
| Antithamnion pectinatum | Portugal / Iberian Coastal | To 2008 | |
| Antithamnionella boergesenii | France / Western Mediterranean | 1995 | |
| Antithamnionella boergesenii | Italy / Central Mediterranean | 1991 - 1992 | |
| Antithamnionella boergesenii | Portugal / Azores | 2005 - 2007 | |
| Antithamnionella boergesenii | Portugal / Madeira | From 2001 | |
| Antithamnionella elegans | Greece / Central Mediterranean | 1975 | |
| Antithamnionella elegans | Greece / Eastern Mediterranean | 2007 | |
| Antithamnionella elegans | Italy / Adriatic Sea | 1980 - 1984 | |
| Antithamnionella elegans | Italy / Central Mediterranean | 1970 - 1971 | |
| Antithamnionella elegans | Italy / Western Mediterranean | 1822 | |
| Antithamnionella elegans var. sublittoralis | Italy / Central Mediterranean | 1980 | |
| Antithamnionella spirographidis | Australia / Bass strait | 1976 | |
| Antithamnionella spirographidis | Belgium | 1992 | |
| Antithamnionella spirographidis | France / Biscay Gulf | 1975 | |
| Antithamnionella spirographidis | France / Celtic seas | 1911 | |
| Antithamnionella spirographidis | France / English Channel | 1927 | |
| Antithamnionella spirographidis | France / Western Mediterranean | 2004 | |
| Antithamnionella spirographidis | Germany / North Sea | 2012 | |
| Antithamnionella spirographidis | Greece / Central Mediterranean | 1983 | |
| Antithamnionella spirographidis | Greece / Eastern Mediterranean | 1992 | |
| Antithamnionella spirographidis | Ireland | 1969 | |
| Antithamnionella spirographidis | Italy / Adriatic Sea | 1995 | |
| Antithamnionella spirographidis | Netherlands | 1974 | |
| Antithamnionella spirographidis | Portugal / Iberian Coastal | 2003 - 2008 | |
| Antithamnionella spirographidis | Portugal / Madeira | To 1974 | |
| Antithamnionella spirographidis | Spain / Iberian Coastal | 1927 | |
| Antithamnionella spirographidis | United Kingdom (Britain) / English Channel | To 1911 | |
| Antithamnionella ternifolia | Australia / Bass strait | 1977 | |
| Antithamnionella ternifolia | Belgium | 1970 | |
| Antithamnionella ternifolia | Denmark / Baltic Sea | 2014 | |
| Antithamnionella ternifolia | France / Biscay Gulf | 1969 | |
| Antithamnionella ternifolia | France / Celtic seas | 1910 | |
| Antithamnionella ternifolia | France / English Channel | 1910 | |
| Antithamnionella ternifolia | France / Western Mediterranean | 1981 | |
| Antithamnionella ternifolia | Germany / Baltic Sea | 2014 | |
| Antithamnionella ternifolia | Germany / North Sea | 1958 | |
| Antithamnionella ternifolia | Ireland | 1930 | |
| Antithamnionella ternifolia | Netherlands | 1951 | |
| Antithamnionella ternifolia | New Zealand / New Zealand Shelf / North Island | To 1972 | |
