| Okenia vena | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Nudibranchia |
| Family: | Goniodorididae |
| Subfamily: | Goniodoridinae |
| Genus: | Okenia |
| Species: | O. vena |
| Binomial name | |
| Okenia vena Rudman, 2004 | |
Okenia vena is a species of sea slug, specifically a dorid nudibranch, a marine gastropod mollusc in the family Goniodorididae.
This species was described from northern New South Wales, Australia. It is known only from eastern Australia.
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.
The diet of this species is the ctenostome bryozoan Amathia tortuosa.