Codakia orbicularis

Unattached species usually burrowing in soft bottoms. Dead shells are often encountered on the sand.

Codakia orbicularis:

Great White Lucine. A handsome and showy shell about 9 cm long. Orbicular, solid and inflated. Lunule small, heart-shaped. Beaks sharp and prominent, hinge teeth large and sturdy. Surface marked with many narrow radiating ribs crossed by elevated growth lines which give the shell a cross-ribbed appearance. Colour: white, sometimes with a border of pink or lavender on the inside. Occurs in moderately shallow water, and can burrow down to 20 cm.