| Species |
Recipient region |
Date of the first record |
|
| Warnowia schuettii | Ukraine / Black Sea | 2001 |  |
| Watersipora arcuata | Australia / Bass strait | 1973 - 1976 | |
| Watersipora arcuata | France / Western Mediterranean | From 2015 | |
| Watersipora arcuata | Italy / Central Mediterranean | 2016 | |
| Watersipora arcuata | Italy / Western Mediterranean | 2013 - 2014 | |
| Watersipora aterrima | France / Biscay Gulf | 1983 | |
| Watersipora aterrima | France / Celtic seas | 1983 | |
| Watersipora souleorum | Italy / Western Mediterranean | To 1909 | |
| Watersipora subatra | France / Biscay Gulf | 1968 | |
| Watersipora subatra | France / English Channel | 1983 | |
| Watersipora subatra | France / North Sea | 1983 | |
| Watersipora subatra | Ireland | 2011 | |
| Watersipora subatra | Spain / Spain | 2017 | |
| Watersipora subtorquata | Australia / Bass strait | 1973 - 1976 | |
| Watersipora subtorquata | France / Biscay Gulf | 1983 | |
| Watersipora subtorquata | Germany / North Sea | 2012 | |
| Watersipora subtorquata | Ireland | 2011 | |
| Watersipora subtorquata | Italy / Western Mediterranean | 1960 | |
| Watersipora subtorquata | Portugal / Azores | To 1888 | |
| Watersipora subtorquata | Portugal / Iberian Coastal | To 2004 | |
| Watersipora subtorquata | Portugal / Madeira | 2006 | |
| Watersipora subtorquata | Spain / Iberian Coastal | To 2016 | |
| Watersipora subtorquata | United Kingdom (Britain) / English Channel | 2007 | |
| Weinkauffia macandrewii | Greece / Eastern Mediterranean | 2009 | |
| Wildemania miniata | Denmark / Baltic Sea | 1995 | |
| Wildemania miniata | Denmark / North Sea | 1995 | |
| Womersleyella setacea | France / Western Mediterranean | 1987 | |
| Womersleyella setacea | Greece / Central Mediterranean | 2001 | |
| Womersleyella setacea | Greece / Eastern Mediterranean | 1988 | |
| Womersleyella setacea | Israel | 2015 | |
| Womersleyella setacea | Italy / Adriatic Sea | 1997 | |
| Womersleyella setacea | Italy / Central Mediterranean | 1993 | |
| Womersleyella setacea | Italy / Western Mediterranean | 1986 | |
| Womersleyella setacea | Spain / Iberian Coastal | To 2011 | |
