Berghia

Berghia is a genus of sea slugs, aeolid nudibranchs. They are shell-less marine gastropod molluscs in the family Aeolidiidae. They are covered in cerata which give them their unique tentacle look and color. Berghia are commonly found in shallow waters and their diet consists of strictly Aiptasia anemone. This genus is now commonly used commercially to fight off sea anemone populations in fish tanks.

Wikipedia →