What is "scyllaea"

Scyllaea \Scyl*l[ae]"a\, n. [NL. See Scylla.] (Zo["o]l.) A genus of oceanic nudibranchiate mollusks having the small branched gills situated on the upper side of four fleshy lateral lobes, and on the median caudal crest.

Note: In color and form these mollusks closely imitate the fronds of sargassum and other floating seaweeds among which they live.

Scyllaea is a genus of nudibranchs. They are marine gastropod molluscs in the family Scyllaeidae.

The slugs live on floating algae like Sargassum, where they have the same color and shape as the alga and can hardly be seen by predators. They feed on hydrozoa growing on the alga.