Purple-hinged rock scallops (Crossadoma gigantea) are found intertidally and down to depths of 60 meters. They are predominately found in southeast Alaska. They are unique in that once they reach a little more than an inch they cement themselves to hard substrates such as rocks and coralliney shorelines. Crossadoma gigantea have a firm white tasty muscle considered a delicacy by many. It is being considered as a potential species for aquatic farming in Alaska.
All photos by Jim Swingle. Adult Purple-hinged rock scallops. PHRS larvae, notice the translucent shell and full gut from hatchery feed. Sexually mature Crossadoma gigantea . Notice the orange gonads of the female on-top and the swollen white gonads of the males.