Sea slug (Phyllidia varicosa), Sulawesi, Indonesia, Southeast Asia, Asia

Phyllidia exquisita nudibranch, Indo-west Pacific waters, grows to 50mm, Philippines, Southeast Asia, Asia

Phyllidia ocellata nudibranch, Sulawesi, Indonesia, Southeast Asia, Asia

Phyllidia coelestis nudibranch, Beqa Lagoon, Fiji.

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

A beautiful nudibranch (Phyllidia ocellata) crawls over the seafloor of Raja Ampat in eastern Indonesia.

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

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

Phylldiana (Phyllidia), a type of nudibranch, Sabah, Malaysia, Borneo, Southeast Asia, Asia

Nudibranch Phyllidia ocellata

Harlequin nudibranch ( Phyllidia varicosa ), Mahe, Seychelles, Indian Ocean (rr)

Group of nudibranches, Phyllidia varicosa, Gato Island, Cebu, Philippines, Southeast Asia, Asia

Nudibranch Phyllidia varicosa, Mahe, Seychelles, Indian Ocean

Nudibranch Phyllidia ocellata

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

Colorful nudibranch, Phyllidia varicosa, Indonesia, Indian Ocean, Komodo National Park