Melibe megaceras

Melibe megaceras has microscopic algae (zooxanthellae) in its body, which gives it the brownish appearance. As the Latin name implies it has large cerata (megaceras). Some animals also show some whitish opaque spots on the body. The animal uses its large oral hood for feeding on small crustaceans. It is usually found on sandy habitats and can look extremely flat when it holds its cerata horizontally.