| Main Ref. | Dauvin, J.C., T. Ruellet, T. Thiebaut, F. Gentil, N. Desroy, A.L. Janson, S. Duhamel, J. Jourde and N. Simon, 2007 |
| To | Bay of Seine, English Channel |
| FAO area | Atlantic, Northeast |
| From | Western part of the English Channel (French and Southern UK) |
| FAO area | Atlantic, Northeast |
| Year | |
| Range | 1997 - 1999 |
| Period | 1975-present |
| Established in the Wild | probably yes |
| Established in Aquaculture | |
| Significant Ecological Interactions | probably yes - undecided |
| Significant Socio-economic Effects | |
| Introduced by | unknown |
| Reason | ballast water |
| Other Reason | diffused from other countries |
| Comments | Introduction may be accidental via ballast waters. Colonization may be due to the increase of fine sediment in the eastern part of the Bay, or by larval dissemination from neigbhboring populations.. |