| Species | Recipient region | Date of the first record | |
|---|
| Mercenaria mercenaria | France / Western Mediterranean | 1965 |  |
| Mercenaria mercenaria | Ireland | 1969 | |
| Mercenaria mercenaria | France / Celtic seas | 1861 | |
| Mercenaria mercenaria | United Kingdom (Britain) / English Channel | 1884 | |
| Mercenaria mercenaria | Netherlands | 1933 | |
| Mercenaria mercenaria | Belgium | 1933 | |
| Mercenaria mercenaria | Italy / Adriatic Sea | 1998 | |
| Mercenaria mercenaria | Italy / Western Mediterranean | 1983 | |
| Mercenaria mercenaria | United Kingdom (Britain) / North Sea | 1864 | |
| Mercenaria mercenaria | France / Biscay Gulf | 1936 - 1939 | |
| Mercenaria mercenaria | Portugal / Iberian Coastal | To 2010 | |
| Mercenaria mercenaria | Spain / Iberian Coastal | To 1978 | |
| Mercenaria mercenaria | France / North Sea | 1930 | |
| Mercenaria mercenaria | France / English Channel | 1861 | |
