Summary[
edit] Description: English: Shells of the swollen river mussel (Unio tumidus), length: 9,5 cm, recently killed by dredging of an irrigation ditch, Kirchwerder, Hamburg, Germany Deutsch: Große Flussmuschel (Unio tumidus), Schalen, Länge: 9,5 cm, Kirchwerder, Hamburg, Deutschland. Date: 18 June 2010. Source: Own work. Author:
G.-U. Tolkiehn.