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Black-margined nudibranch
Papua New Guinea - PNG · Pacific Ocen - Bismarck Sea
One of the most commonly seen chromodorids on Indo-West Pacific reefs, formerly placed in Glossodoris. It is easily recognised by the fine black line bordering its frilly mantle.
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Cream to pale yellow body with a smooth, often strongly undulating mantle edged by a thin black line. Rhinophores and gills yellowish white, also edged with fine black lines.
Hard to confuse: the thin black margin on the mantle, rhinophores and gills is unique among common yellowish chromodorids.
Coral reefs, often on exposed reef surfaces and walls.
Sponges.
