"Elysia is a genus of sea slugs, marine gastropod molluscs in the family Plakobranchidae. These animals are colorful sea slugs, and they can superficially resemble nudibranchs, but are not very closely related to them. Instead they are sacoglossans, commonly known as sap-sucking slugs.Elysia sea slugs graze on algae and some species such as E. viridis and E. chlorotica hijack the chloroplasts for themselves."@en . "* Tridachia (Deshayes, 1857)" . . "* Thridachia (P. Fischer, 1883) ((Unjustified emendation of Tridachia))" . . "* Elysiella (Bergh, 1871)" . . "* Tridachiella (MacFarland, 1924)" . . . . . "* Thallepus (Swainson, 1840)" . "* Aplysiopterus (Delle Chiaje, 1830)" . "* Elysiella (Verrill, 1872) ((Invalid: junior homonym of Elysiella Bergh, 1871))" . "* Actaeon (Rang, 1829) ((Not available from Oken, 1815))" . "* Checholysia (Ortea, Caballer, Moro & Espinosa, 2005)" . "Elysia"@en . "* Pterogasteron (Pease, 1860)" .