Okenia pellucida is a species of sea slug, specifically a dorid nudibranch, a marine gastropod mollusc in the family Goniodorididae.
It is known from the United Arab Emirates, India, Malaysia, New Zealand, Palmyra Atoll and Japan.
[2] This Okenia has a narrow body and eleven or twelve pairs of short lateral papillae.
The body is translucent and covered with a reticulate pattern of brown lines.
The diet of this species is a bryozoan, Amathia verticillata which is a common fouling organism which is transported on ships' hulls.