Elegant Phyllidia

Seen in Cabilao, Philippines (2012). Photo by Mark Bockstael (my husband).
Phyllidia elegans is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Phyllidiidae. This animal can be distinguished by a pale-colored foot having a single median longitudinal black line on the sole, a light pink dorsal tubercles commonly tipped in yellow, and black lines on the lateral margins of the sole.
Habitat: This species has been found in Indonesia, Malaysia, Thailand, the Andaman Sea, Myanmar, the Red Sea, the Mariana Islands, north Sulawesi, Vanuatu and Papua New Guinea.