Cassis (gastropod) - Cassis common name the helmet shells is a genus of very large sea snails marine gastropod mollusks in the family Cassidae the helmet shells and their allies. This is the type genus of the subfamily Cassinae. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
Animal