The small and colorful wedge-shaped coquina clams are often seen digging in the swash, or the area where the waves roll in and recede from the beach.  They are a sign of a healthy eco-system as they filter feed on algae and other small matter.  The coquina clams, in turn, are eaten by fish like pompano and sea mullet.  They range from Virginia, south to the Gulf of Mexico.  Coquina Beach south of Nags Head is named for the coquina clam, where they are often found in abundance.  The shells seldom reach over one inch and are often found with both shells intact.  Their glorious colors are a delight to behold!