Arctic hiatella

Hiatella arctica

Family Hiatellidae - hiatellas

Bivalve (2 shells); shell elongate, irregular margins; color chalky white; beaks about 1/3 back from anterior end; posterior end with weak radial ridge, may look scaly; weak, irregular concentric growth lines; small clam.
Similar Species
The mossy ark has irregular shaped margins but has distinct beaded ridges.
Gulf and hypersaline bays; bores into soft rock, mud, sand or existing crevices
Maximum Size
2.5 cm (1 in)
Other Common Names
Previous Scientific Names
Shape is highly variable because of its boring habits.