tangledwing:Blue sea snail (Chromodoris willanii), a shell-less marine gastropod mollusk.It is most
tangledwing:Blue sea snail (Chromodoris willanii), a shell-less marine gastropod mollusk.It is most common in the seas of various islands of Indonesia. You can also find them near the shores of Philippines. Chromodoris Wilani is a sponge eater. They feed on Semitaspongia groups of sponges. -- source link