astronomy-to-zoology:

Chromodoris splendida

…is a colorful species of Chromodorid nudibranch which is endemic to the waters around New South Wales, Australia. Like many species of nudibranch Chromodoris splendida is carnivorous and will feed on a variety of sessile invertebrates like sponges. 

Classification

Animalia-Mollusca-Gastropoda-Heterobranchia-Euthyneura-Nudipleura-Nudibranchia-Doridoidea-Chromodorididae-Chromodoris-C. splendida

Image: Richard Ling