Rubramoena amoena

Rubramoena amoena is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Fionidae.

Distribution
This species was described from Torbay, Devon, England. It has been reported from the NE Atlantic from Orkney south to Portugal and in the Mediterranean Sea.

Description
The typical adult size of this species is 5–12 mm.

Habitat
Rubramoena amoena feeds on hydroids of the genus Halecium.