We see these often in the summer in the lower intertidal zone. Their yellow egg cases also show up on the underside of rocks. They have a sharp penetrating tongue with which they can penetrate the shells of other molluscs
Domain Eukarya
Kingdom Animalia
Phylum Mollusca
Class Gastropoda
Subclass Prosobranchia
Order Neogastropoda
Suborder Rachiglossa
Family Muricidae
Genus Ceratostoma
Species foliata
Common Name: Leafy Hornmouth
Garry Fletcher