Public domain: Introduction events' accounts (50 / 5527)
| Species |
Recipient region |
Date of the first record |
|
| Anguillicoloides crassus | Germany / North Sea | 1982 |  |
| Anguillicoloides crassus | Ireland | 1998 | |
| Anguillicoloides crassus | Italy / Adriatic Sea | 1997 | |
| Anguillicoloides crassus | Italy / Western Mediterranean | 2001 - 2011 | |
| Anguillicoloides crassus | Latvia | 1998 | |
| Anguillicoloides crassus | Lithuania | 1998 | |
| Anguillicoloides crassus | Netherlands | To 1985 | |
| Anguillicoloides crassus | Norway / North Sea | 1994 | |
| Anguillicoloides crassus | Poland | 1988 | |
| Anguillicoloides crassus | Portugal / Iberian Coastal | 1992 | |
| Anguillicoloides crassus | Russia / Baltic Sea / Kaliningrad area | 1988 | |
| Anguillicoloides crassus | Sweden / Baltic Sea | 1987 | |
| Anguillicoloides crassus | Sweden / North Sea | 1989 | |
| Anguillicoloides crassus | United Kingdom (Britain) / English Channel | From 1987 | |
| Anguillicoloides crassus | United Kingdom (Britain) / North Sea | 1987 | |
| Anomia chinensis | France / Biscay Gulf | 1971 | |
| Anomia chinensis | France / Celtic seas | 1974 | |
| Anomia ephippium | Netherlands | 1935 | |
| Anoplodactylus californicus | Israel | 1951 | |
| Anoplodactylus californicus | Italy / Western Mediterranean | 1965 | |
| Anoplodactylus digitatus | Israel | 1951 | |
| Anotrichium furcellatum | France / Celtic seas | 1922 | |
| Anotrichium furcellatum | France / English Channel | To 1922 | |
| Anotrichium furcellatum | Greece / Eastern Mediterranean | 1971 - 1973 | |
| Anotrichium furcellatum | Israel | 1958 | |
| Anotrichium furcellatum | Netherlands | 1950 | |
| Anotrichium furcellatum | Portugal / Azores | 2005 - 2007 | |
| Anotrichium furcellatum | Portugal / Iberian Coastal | To 1960 | |
| Anotrichium furcellatum | Portugal / Madeira | 1970 | |
| Anotrichium furcellatum | Spain / Canary Islands | To 2004 | |
| Anotrichium furcellatum | Spain / Iberian Coastal | 1979 | |
| Antennella secundaria | Australia / Bass strait | 1910 | |
| Anthopleura anjunae | Spain / Iberian Coastal | To 2016 | |
| Anthopleura elegantissima | Spain / Iberian Coastal | To 2016 | |
| Antithamnion amphigeneum | France / Western Mediterranean | To 1998 | |
| Antithamnion amphigeneum | Italy / Central Mediterranean | 2005 | |
| Antithamnion amphigeneum | Italy / Western Mediterranean | 1996 | |
| Antithamnion amphigeneum | Portugal / Iberian Coastal | To 2004 | |
| Antithamnion amphigeneum | Spain / Iberian Coastal | 1995 | |
| Antithamnion densum | France / Biscay Gulf | 1964 | |
| Antithamnion densum | France / Celtic seas | 1964 | |
| Antithamnion densum | France / English Channel | 1964 | |
| Antithamnion densum | France / North Sea | 1981 | |
| Antithamnion densum | Ireland | 1991 | |
| Antithamnion densum | Portugal / Azores | 2005 | |
| Antithamnion densum | Portugal / Iberian Coastal | 2004 | |
| Antithamnion densum | Spain / Canary Islands | To 2006 | |
| Antithamnion densum | Spain / Iberian Coastal | 1984 - 1995 | |
| Antithamnion diminuatum | Portugal / Azores | 1989 | |
| Antithamnion diminuatum | Spain / Canary Islands | To 1996 | |
