17 species (see text) Melibe is a genus of sea slugs, nudibranchs, marine gastropod mollusks in the family Tethydidae.

[2] Most nudibranchs are carnivores, but their prey is usually sessile or slow-moving animals such as sponges or bryozoans.

In contrast, Melibe is an active predator which traps fast-moving free-swimming animals such as small crustaceans, using its extendable oral hood.

[1] Species within the genus Melibe include 17 valid species:[2] Species inquirenda:[2]