| Year / Period | From | To | Established | Ecological effects |
|---|---|---|---|---|
| 1870 - 1879 | United States of America | United Kingdom | yes | probably no |
| 1864 | American Atlantic | United Kingdom | yes | unknown |
| 1870 | United States of America | Netherlands | yes | |
| 1965 | American Atlantic | France | probably no | unknown |
| 1965 | USA | Netherlands | unknown | unknown |
| 1969 | Northwest Atlantic | Marine waters of Ireland | unknown | unknown |
| 1983 | American Atlantic | Italy | probably no | unknown |