| Year / Period | From | To | Established | Ecological effects |
|---|---|---|---|---|
| unknown | unknown | British Columbia | unknown | unknown |
| unknown | Japan | France | no | unknown |
| 1984 - 1985 | Japan | Canada | probably no | unknown |
| 1981 | Japan | China | unknown | |
| 1985 | Japan | Denmark. | unknown | unknown |
| 1987 | Japan | France | unknown | unknown |
| 1988 | Northwest Pacific | Marine waters of Ireland | no | unknown |
| 1990 | unknown | Ireland | unknown | unknown |