Organismo que forma parte de una colección biológica utilizada para reforzar actividades prácticas en laboratorio de biología y ecología.
Shore diving at Pupukea Beach Park, max depth 39 ft/12m.
Not entirely sure of ID, but Hoover notes that in this species the sides of the shell are fused and it can't close. Certainly me bumbling around near it with a camera didn't make it close.
Several large, whole or broken shells washed up on the beach.