1. Cerastoderma edule. Shell length 22.9mm. Relaxed specimen. Foot yellow-orange and thick when contracted within shell, but white and thin when extended and pigment diffused. Flimsy mantle coats inside of valves, yellowish edge. Ctenidium to left of body.
2. Cerastoderma edule. Shell length 22.9mm. Relaxed specimen. Foot yellow-orange and thick when contracted within shell, but white and thin when extended and pigment diffused. Flimsy mantle coats inside of valves, yellowish edge. Ctenidium to left of body.

Cerastoderma edule. Shell length 22.9mm. Relaxed specimen. Foot yellow-orange and thick when contracted within shell, but white and thin when extended and pigment diffused. Flimsy mantle coats inside of valves, yellowish edge. Ctenidium to left of body.