Nudibranch - Marianina rosea

This Marianina rosea Nudibranch is very small in size, between 6-8 mm in length.
I had originally thought its a more commonly seen Flabellina Nudibranch but was told after the dive it is not.
The significant feature of this species/genus is the base of the Rhinopores.

This small dendronotoidean is often found under dead coral slabs on reef flats. It feeds on hydroids. Its colour, and row of bifid cerata down each side of the mantle are characteristic of the species.