Public domain: Introduction events' accounts (50 / 5516)
| Species |
Recipient region |
Date of the first record |
|
| Alitta virens | United Kingdom (Britain) / English Channel | 1800 - 1900 |  |
| Alitta virens | United Kingdom (Britain) / North Sea | 1800 - 1900 | |
| Alkmaria romijni | Denmark / Baltic Sea | 1975 | |
| Alkmaria romijni | Denmark / North Sea | 1929 | |
| Alkmaria romijni | Netherlands | 1919 | |
| Alkmaria romijni | Norway / North Sea | To 1997 | |
| Alkmaria romijni | Russia / Baltic Sea / Kaliningrad area | 1996 | |
| Alkmaria romijni | Sweden / Baltic Sea | 1960 - 1972 | |
| Alloeocarpa loculosa | Portugal / Azores | To 1971 | |
| Allolepidapedon fistularia | Italy / Western Mediterranean | 2005 | |
| Allolepidapedon fistulariae | Israel | 2007 | |
| Alpheus dentipes | Bulgaria | 1966 | |
| Alpheus edwardsii | Israel | 1951 | |
| Alpheus lobidens | Israel | 1951 | |
| Alpheus migrans | Israel | 1977 | |
| Alpheus rapacida | Greece / Eastern Mediterranean | 1998 | |
| Alpheus rapacida | Israel | 1960 | |
| Alveinus miliaceus | Israel | 2016 | |
| Amathia distans | Australia / Bass strait | To 1999 | |
| Amathia gracilis | Germany / Baltic Sea | 1990 - 1999 | |
| Amathia gracilis | Germany / North Sea | 1990 - 1999 | |
| Amathia gracilis | Netherlands | To 1969 | |
| Amathia gracilis | United Kingdom (Britain) / Celtic seas / Channel Islands | 1960 - 1969 | |
| Amathia gracilis | United Kingdom (Britain) / English Channel | 2002 | |
| Amathia gracilis | United Kingdom (Britain) / North Sea | To 1996 | |
| Amathia imbricata | Germany / Baltic Sea | To 2015 | |
| Amathia imbricata | Germany / North Sea | To 2015 | |
| Amathia verticillata | France / Western Mediterranean | 2015 | |
| Amathia verticillata | Greece / Central Mediterranean | 1980 | |
| Amathia verticillata | Greece / Eastern Mediterranean | 1969 | |
| Amathia verticillata | Israel | 1960 | |
| Amathia verticillata | Italy / Adriatic Sea | To 1867 | |
| Amathia verticillata | Italy / Central Mediterranean | 1952 | |
| Amathia verticillata | Italy / Western Mediterranean | To 1822 | |
| Amathia verticillata | Portugal / Azores | 2009 | |
| Amathia verticillata | Portugal / Madeira | 2008 | |
| Amathia verticillata | Spain / Canary Islands | To 2011 | |
| Amathia verticillata | Spain / Iberian Coastal | To 2011 | |
| Amathia verticillata | Taiwan / South China Sea | 2015 | |
| Amathina tricarinata | Israel | 2004 | |
| Ameira divagans divagans | Germany / Baltic Sea | 1970 | |
| Ameira divagans divagans | Sweden / North Sea | | |
| Ammonia confertitesta | France / Biscay Gulf | 2019 | |
| Ammonia confertitesta | France / English Channel | 2019 | |
| Ammonia tepida | France / Biscay Gulf | 1970 | |
| Ammonia tepida | France / Celtic seas | 1970 | |
| Ammonia tepida | France / English Channel | 1970 | |
| Ammonia tepida | France / North Sea | 1970 | |
| Ammothea hilgendorfi | Belgium | 2013 | |
| Ammothea hilgendorfi | France / Biscay Gulf | 2019 | |
