. . "Elysia viridis"@en . . . . . "Elysia viridis, the sap-sucking slug, is a small-to-medium-sized species of green sea slug, a marine opisthobranch gastropod mollusc in the family Plakobranchidae. This sea slug resembles a nudibranch, but it is not closely related to that clade of gastropods. It is instead a sacoglossan."@en . . . .