Nudibranch on coral, Papua New Guinea, Pacific

Warty Nurdibranch, Phylidiella pustulosa, Kai Islands, Moluccas, Indonesia

A colorful nudibranch, Phyllidia varicosa, crawls on a black sand seafloor in Alor, Indonesia.

A vibrant nudibranch, Phyllidia sp., feeds on sponges on a coral reef in the remote, tropical islands of Raja Ampat, Indonesia.

Phyllidia coelestis nudibranch, Beqa Lagoon, Fiji.

Phyllidia coelestis nudibranch on blue background, Beqa Lagoon, Fiji.

Nudibranch feeding on algae, Papua New Guinea.

Nudibranch Eye-spotted warty snail (Phyllidia ocellata) crawls through coral reef in search of food, Indian Ocean, Mascarene Islands, Mauritius, Africa