| Species | Recipient region | Date of the first record | |
|---|
| Melanothamnus harveyi | Israel | 2015 |  |
| Melanothamnus harveyi | Greece / Eastern Mediterranean | 2006 | |
| Melanothamnus harveyi | France / Western Mediterranean | 1958 | |
| Melanothamnus harveyi | Ireland | To 1979 | |
| Melanothamnus harveyi | France / Celtic seas | 1832 | |
| Melanothamnus harveyi | United Kingdom (Britain) / Celtic seas | 1908 | |
| Melanothamnus harveyi | United Kingdom (Britain) / English Channel | 1908 | |
| Melanothamnus harveyi | Sweden / North Sea | 1990 | |
| Melanothamnus harveyi | Netherlands | 1960 | |
| Melanothamnus harveyi | Belgium | To 2000 | |
| Melanothamnus harveyi | Denmark / North Sea | 1986 | |
| Melanothamnus harveyi | Germany / North Sea | 1972 | |
| Melanothamnus harveyi | Italy / Western Mediterranean | To 1969 | |
| Melanothamnus harveyi | Norway / North Sea | 1983 | |
| Melanothamnus harveyi | France / English Channel | 1832 | |
| Melanothamnus harveyi | Spain / Iberian Coastal | To 1998 | |
| Melanothamnus harveyi | Spain / Canary Islands | 1991 | |
| Melanothamnus harveyi | United Kingdom (Britain) / North Sea | 1908 - 1965 | |
| Melanothamnus harveyi | Portugal / Iberian Coastal | From 2003 | |
| Melanothamnus harveyi | Portugal / Azores | 2005 - 2007 | |
| Melanothamnus harveyi | Norway / Norwegian Sea | To 2012 | |
| Melanothamnus harveyi | Germany / Baltic Sea | To 1982 | |
| Melanothamnus harveyi | Denmark / Baltic Sea | To 1982 | |
| Melanothamnus harveyi | France / Biscay Gulf | 1975 | |
| Melanothamnus harveyi | United Kingdom (Britain) / North Sea / Orkney Islands | 2014 | |
