Like other nudibranchs, Skenea ossiansarsi has a pair of rhinophores, which are specialized sensory organs located on top of the head.

These rhinophores can detect chemicals in the water, helping the sea slug to locate food and potential mates.

The body of Skenea ossiansarsi is covered in small, finger-like projections called cerata, which are used for respiration and for storing and digesting food.

One interesting feature of Skenea ossiansarsi's appearance is its reddish-brown spots, which are arranged in a distinctive pattern on the body and head.

These spots are actually clusters of tiny, raised bumps called tubercles, which may serve a defensive function by making the sea slug more difficult to swallow or grip.