Freshwater polyps

Freshwater polyps: Freshwater polyps (hydra vulgaris) sitting on a twig. — 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 10:42:20