| 年 /时期 | 从 | 到 | 定居 | 生态影响 |
|---|---|---|---|---|
| 1978 | Western Atlantic Ocean | North Sea | 是的 | 是的 |
| 1979 | North America | Limfjorden and Danish Wadden Sea | ||
| 1979 | North America | Dutch North Sea coastal zone | 是的 | |
| 1982 | German Bight | Sweden | ||
| 1986 | German Bight | Belgian coast | ||
| 1989 | German Bight | Norway | ||
| 1989 | Atlantic coasts of North America. | Home Beach, Norfolk. | 是的 | 未知 |
| 1991 | Not specified | Bay of Seine, English Channel | 是的 | 是的 |
| 2011 | Elbe Estuary | Northern Spain | 可能是 |