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The Reef Experience

Lettuce sea slug, Elysia crispata

Lettuce sea slug, Elysia crispata

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Elysia crispata, common name the lettuce sea slug or lettuce slug, is a large and colorful species of sea slug, a marine gastropod mollusk. The lettuce slug resembles a nudibranch, but it is not closely related to that clade of gastropods; it is classified as a sacoglossan.

The sea slug eats green algae , but not all of the algae they eat is digested. Some of the green algae gets shuttled off to make a home in those fleshy appendages (called parapodia).

 

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