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

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.

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

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