American Crayfish

American Crayfish: An american crayfish (Orconectes limisosus) in shells of zebra mussels. Both animals do not originally belong here. — Nikon D200, Nikkor AF Micro 60mm, Lake Zug, Restaurant Baumgarten, 19 May 2013. Nikon D200, 1/250 s, F/22.0, 60 mm, ISO 200, Sunday, May 19, 2013 10:47:37