Elysia chlorotica

Taxonomy:

Kingdom
   Animalia
Phylum
   Mollusca
Class
   Gastropoda
Subclass
   Opisthobranchia
Order
   Sacoglossa
Family
   Elysiidae
Genus
   Elysia (Risso, 1818)
Species
   Elysia chlorotica (Gould, 1870)