Elysia crispata

Lettuce sea slug
	A live individual of the lettuce sea slug in situ, head end towards the lower right
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Family:	Plakobranchidae
Genus:	Elysia
Species:	E. crispata
Binomial name
	Elysia crispata; (Mörch, 1863)
Synonyms
	List Elysia (Tridachia) crispata Mörch, 1863; Elysia clarki Pierce, Curtis, Massey, Bass, Karl & Finney, 2006; Elysia pruvotfolae Er. Marcus, 1957; Elysia schrammi Mörch, 1863; Elysia verrilli Pruvot-Fol, 1946; Tridachia crispata (Mörch, 1863); Tridachia schrammi (Mörch, 1863); Tridachia whiteae Er. Marcus, 1957;

Elysia crispata, common name the lettuce sea slug or lettuce slug, is a large and colorful species of sea slug, a marine gastropod mollusk.^[1]

The lettuce slug resembles a nudibranch, but it is not closely related to that clade of gastropods; it is classified as a sacoglossan.

^ ^a ^b Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O, eds. (2022). "Elysia crispata Mörch, 1863". MolluscaBase. World Register of Marine Species. Retrieved 2022-10-08.