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.