1. Akera bullata. Dorsal view of parasol at mid-upstroke. Shell hangs down like clapper of bell. In soakaway pond of marine aquarium, Oban, Scotland. April 2010.
2. Akera bullata. Dorsal view of parasol at mid-upstroke. Shell hangs down like clapper of bell. In soakaway pond of marine aquarium, Oban, Scotland. April 2010.

Akera bullata. Dorsal view of parasol at mid-upstroke. Shell hangs down like clapper of bell. In soakaway pond of marine aquarium, Oban, Scotland. April 2010.