Hermaea cruciata is a species of sacoglossan sea slug, a shell-less marine opisthobranch gastropod mollusk in the family Hermaeidae.Jensen K. R. (November 2007). "Biogeography of the Sacoglossa (Mollusca, Opisthobranchia)" . Bonner zoologische Beiträge 55(2006)(3-4): 255–281. References