I saw this species rarely, usually on algae and sandy bottoms at depths of 5 to 15m at night. The one below was along the coast between Makua and Kaena Point, Oahu. Considered by some a young specimen of Atys naucum, but if so, the color of the animal would have to change considerably as it grows, as in the linked specimen from the Philippines.
Created 20 April 2009