Family ScytalinidaeGraveldiver![]() Selected Characters: Body elongate, compressed; dorsal and anal fins beginning at midbody, confluent with caudal; pelvic fins absent; scales absent. This family is monotypic: it consists of just one species. The Graveldiver can be up to 15 cm long. It occurs along the Pacific coast of North America in shallow water, where it burrows among gravel or sand and is seldom seen except by the occasional clam digger. Puget Sound Species Scytalina cerdale Graveldiver |