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Is a species of sea slug, a sacoglossan, a marine gastropod mollusk in the family Plakobranchidae. This species can be up to 3 cm in size. The body is partially covered by the fold of the lateral parapodia. The mantle is bright blue, and the edges of the parapodia are framed by two lines: a fine black one and an orange one on the external side. The smooth rhinophores and the oral cavity are also marked with a black line and with an orange band.
This species occurs in the tropical West-Pacific, mainly in Indonesia and the Philippines. It lives on the external slope of coral reefs, on top of the reef, and in the lagoon. This species is benthic and diurnal. Because of its aposematic coloration, it crawls around to feed in the daylight. Its diet is based on algae