| Citation | HELCOM, 2012 Checklist of Baltic Sea macro-species. Baltic Sea Environment Proceedings No. 130, 206p. |
| Ref. | 128574 HELCOM, 2012 |
| Page | 200:no2 |
| Named Used as Valid | Alca torda |
| Locality | |
| Distribution | Baltic Sea (Great Belt, Little Belt, Kiel Bay, The Sound, and Gulf of Riga) and Kattegat. |