Trapania palmula

Trapania palmula is a species of sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Goniodorididae.

It is also found in Indonesia and southern Japan.

[2] This species of Trapania is unusual in having raised rounded tubercles all over the body.

The lateral papillae have a patch of white surrounding a blue diagonal streak.

[2] Trapania palmula feeds on Entoprocta which often grow on sponges and other living substrata.