Striped Phyllidiopsis - Phyllidiopsis xishaensis

"Phyllidiopsis xishaensis" is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Phyllidiidae. Frequently misidentified as "Phyllidiopsis striata" but that species has been shown to be a completely different animal, a "Phyllidiella".