Clench’s Helmet
(12”) 30 cm
Cassis madagascariensis form spinella (Clench, 1944).
S. E. United States.
5 to 30 m; locally common.
Largest Cassis
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Sublcass: Caenogastropoda
Order: Littorinimorpha
Family: Cassidae
Genus: Cassis
Species: Cassis madagascariensis