Public domain: Introduction events' accounts (50 / 5516)
| Species |
Recipient region |
Date of the first record |
|
| Melibe viridis | Israel | 2009 |  |
| Melibe viridis | Italy / Central Mediterranean | 1984 | |
| Melibe viridis | Italy / Western Mediterranean | 2007 | |
| Melita nitida | Belgium | To 1996 | |
| Melita nitida | France / Biscay Gulf | 2013 | |
| Melita nitida | France / English Channel | 2003 | |
| Melita nitida | France / North Sea | 2003 | |
| Melita nitida | Germany / Baltic Sea | 2010 | |
| Melita nitida | Germany / North Sea | To 2011 | |
| Melita nitida | Netherlands | 1998 | |
| Melita nitida | Poland | 2014 | |
| Melithaea erythraea | Israel | 1999 | |
| Membranipora membranacea | Australia / Bass strait | 1879 | |
| Membranipora membranacea | Canada / Bay of Fundy | 2013 | |
| Membranipora membranacea | Canada / Northern Gulf of St. Lawrence | 2002 | |
| Membranipora membranacea | Canada / Northern Newfoundland | 2008 | |
| Membranipora membranacea | Canada / South-eastern Scotian Shelf | 1992 | |
| Membranipora membranacea | Canada / Southern Gulf of St. Lawrence and Eastern Scotian Shelf | 2006 | |
| Membranipora membranacea | Canada / Southern Newfoundland and Southern Grand Banks | 2006 | |
| Menaethius monoceros | Italy / Western Mediterranean | 1978 | |
| Menippe mercenaria | France / English Channel | 2007 | |
| Mercenaria mercenaria | Belgium | 1933 | |
| Mercenaria mercenaria | France / Biscay Gulf | 1936 - 1939 | |
| Mercenaria mercenaria | France / Celtic seas | 1861 | |
| Mercenaria mercenaria | France / English Channel | 1861 | |
| Mercenaria mercenaria | France / North Sea | 1930 | |
| Mercenaria mercenaria | France / Western Mediterranean | 1965 | |
| Mercenaria mercenaria | Ireland | 1969 | |
| Mercenaria mercenaria | Italy / Adriatic Sea | 1998 | |
| Mercenaria mercenaria | Italy / Western Mediterranean | 1983 | |
| Mercenaria mercenaria | Netherlands | 1933 | |
| Mercenaria mercenaria | Portugal / Iberian Coastal | To 2010 | |
| Mercenaria mercenaria | Spain / Iberian Coastal | To 1978 | |
| Mercenaria mercenaria | United Kingdom (Britain) / English Channel | 1884 | |
| Mercenaria mercenaria | United Kingdom (Britain) / North Sea | 1864 | |
| Mesanthura romulea | Italy / Central Mediterranean | 2000 | |
| Mesanthura romulea | Italy / Western Mediterranean | 2000 | |
| Mesocalanus tenuicornis | Romania | 1978 | |
| Metacalanus acutioperculum | Italy / Central Mediterranean | 1995 | |
| Metacarcinus novaezelandiae | Australia / Bass strait | 1930 | |
| Metapenaeopsis aegyptia | Greece / Eastern Mediterranean | 1996 | |
| Metapenaeopsis aegyptia | Israel | 1987 | |
| Metapenaeopsis mogiensis consobrina | Greece / Eastern Mediterranean | 1995 | |
| Metapenaeopsis mogiensis consobrina | Israel | 1996 | |
| Metapenaeus monoceros | Israel | 1951 | |
| Metapenaeus stebbingi | Israel | 1958 | |
| Metasychis gotoi | France / Biscay Gulf | 2003 | |
| Metaxia bacillum | Israel | 1978 | |
| Micippa thalia | Israel | 2014 | |
| Microcirce consternans | Israel | 2011 | |
