| Reference no. | HELCOM, 2007 |
| Ecosystem | Baltic Sea |
| Status | stray |
| Abundance | scarce (very unlikely) |
| Lifestage | juv./adults |
| Regional database | |
| Remarks | Rare in the Skagerrak and the northern Kattegat (Ref. 88740). Occasionally strays into the western Baltic where it was once common (Ref. 82311, 88740). HELCOM: critically endangered; considered a high priority species (Ref. 83294). Also Ref. 43278, 52268. |