About Chromodoris willani Rudman, 1982
Chromodoris willani Rudman, 1982 shares a similar general appearance with three other Chromodoris species: Chromodoris lochi, Chromodoris boucheti, and Chromodoris dianae. This species can be easily distinguished from these close relatives by the very prominent white specks that cover its gills and rhinophores. The body color of individual Chromodoris willani can vary widely, ranging from dark blue to a translucent white. All individuals of this species have black stripes along their body, and the central-most stripe is typically non-continuous. This species of nudibranch is distributed in the Western Pacific Ocean, where its range extends from Indonesia and the Philippines to Vanuatu. Like most other nudibranchs, Chromodoris willani feeds on sponges. It has specifically been recorded eating Cacospongia mycofijiensis and species from the genus Semitaspongia, both of which belong to the sponge family Thorectidae.
