| Referência no. | Compagno, L.J.V., 1984 |
| Ecossistema | North Sea |
| Estado | native |
| Abundância | occasional (usually not seen) |
| Fase de vida | adults |
| Base de dados regional | |
| Notas | Previously reported to be a summer guest in North Sea/Skagerrak (Ref. 52268, 88171). Considered to be extirpated from the North Sea (Ref. 88919). Threats in Skagerrak/Kattegat: bycatch fisheries, eutrophication, habitat loss (Ref. 83294). Also Ref. 72391. |