Okenia vena
Okenia vena is a species of sea slug, specifically a dorid nudibranch, a marine gastropod mollusc in the family Goniodorididae. Distribution. This species was described from northern New South Wales, Australia. It is known only from eastern Australia. Description. This "Okenia" has a narrow body and seven to eight lateral papillae on each side and papillae in the middle of the back. The body is white and the rhinophores are brown. There is a pattern of broken brown lines on the back and tail. Ecology. The diet of this species is the ctenostome bryozoan Amathia tortuosa. Okenia vena