| Species | Recipient region | Date of the first record | |
|---|
| Botrylloides violaceus | Portugal / Madeira | 2007 |  |
| Botrylloides violaceus | Ireland | 2005 | |
| Botrylloides violaceus | United Kingdom (Britain) / Celtic seas / Channel Islands | From 2004 | |
| Botrylloides violaceus | United Kingdom (Britain) / English Channel | 2004 | |
| Botrylloides violaceus | Belgium | 2004 | |
| Botrylloides violaceus | Italy / Adriatic Sea | 1993 | |
| Botrylloides violaceus | Canada / Northern Newfoundland | 2007 | |
| Botrylloides violaceus | Canada / Northern Gulf of St. Lawrence | 2014 | |
| Botrylloides violaceus | Canada / Southern Newfoundland and Southern Grand Banks | 2007 | |
| Botrylloides violaceus | Canada / Southern Gulf of St. Lawrence and Eastern Scotian Shelf | 2004 | |
| Botrylloides violaceus | Canada / South-eastern Scotian Shelf | 2001 | |
| Botrylloides violaceus | Canada / Bay of Fundy | 2009 | |
| Botrylloides violaceus | Netherlands | 2000 | |
| Botrylloides violaceus | Portugal / Iberian Coastal | From 2009 | |
| Botrylloides violaceus | Germany / North Sea | 2011 | |
| Botrylloides violaceus | Spain / Iberian Coastal | To 2016 | |
| Botrylloides violaceus | France / English Channel | 2000 | |
| Botrylloides violaceus | France / Biscay Gulf | To 2000 | |
| Botrylloides violaceus | France / North Sea | 2004 | |
| Botrylloides violaceus | United Kingdom (Britain) / North Sea / Orkney Islands | To 2012 | |
| Botrylloides violaceus | Iceland | 2018 | |
