1. Cerastoderma edule. Shell length 22.9mm. Relaxed specimen. Comb-like ctenidia (gills). Foot yellow-orange and thick when contracted within shell, white and thin when extended and pigment diffused. Mouth of Dee Estuary, Cheshire. Oct. 2011.
2. Cerastoderma edule. Shell length 22.9mm. Relaxed specimen. Comb-like ctenidia (gills). Foot yellow-orange and thick when contracted within shell, white and thin when extended and pigment diffused. Mouth of Dee Estuary, Cheshire. Oct. 2011.

Cerastoderma edule. Shell length 22.9mm. Relaxed specimen. Comb-like ctenidia (gills). Foot yellow-orange and thick when contracted within shell, white and thin when extended and pigment diffused. Mouth of Dee Estuary, Cheshire. Oct. 2011.