| Species | Recipient region | Date of the first record | |
|---|
| Bonamia ostreae | Ireland | To 1986 |  |
| Bonamia ostreae | United Kingdom (Britain) / Celtic seas / Channel Islands | From 1982 | |
| Bonamia ostreae | France / Celtic seas | 1979 | |
| Bonamia ostreae | United Kingdom (Britain) / English Channel | 1982 | |
| Bonamia ostreae | Netherlands | 1980 | |
| Bonamia ostreae | Belgium | From 1979 | |
| Bonamia ostreae | Spain / Iberian Coastal | 1982 | |
| Bonamia ostreae | United Kingdom (Britain) / North Sea | 1982 - 1983 | |
| Bonamia ostreae | France / North Sea | 1981 | |
| Bonamia ostreae | France / Biscay Gulf | 1979 | |
| Bonamia ostreae | France / Western Mediterranean | 1987 | |
| Bonamia ostreae | Denmark / North Sea | 2014 | |
| Bonamia ostreae | Denmark / Baltic Sea | 2014 | |
