Small eolid, with rounded head and smooth, finger-shaped rhinophores. Cephalic tentacles shorter than rhinophores, and anterior margin of the foot simply rounded. Cerata elongated, arranged in 6-10 transverse rows dorso-larerally.
general ground color translucent greyish-white to cream with olive green digestive system. Dorsum and cerata with numerous minute opaque white flecks. Head with a dark area anterior to the rhinophores. Cores of cerata olivaceus green to brown with a subapical white band.
common size :
animal 5 to 15 mm in length; Mediterranean specimen: 6 mm.
The olivaceus to dark brown color in the cerata and the dark coloration on the head anterior to the rhinophores are distinctive.
BIOLOGY / ECOLOGY
Gosliner (1980b) and McDonald (1983, as Cuthona sp.) found this species on floating docks, associated with the sea anemones Aiptasia sp., in Hawaiian Islands, and Haliplanella luciae in Californian waters.
found in intertidal lagoons or in harbour areas, sometimes in fouling communities.