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Giant hypselodoris
Philippines · Indo Pacific - South China Sea
A large, fleshy chromodorid nudibranch, one of the biggest members of its genus. It is closely related to Hypselodoris bullockii and was at times treated as its colour form or placed in the genus Risbecia.
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Intense magenta-pink to violet body with an opaque white mantle border that grades into the purple through white reticulation and stippling, rather than a sharp line. Rhinophores and gills are orange-yellow on purple stalks; the five gill branches are held high, far back on the body.
Hypselodoris bullockii is smaller and more variable in colour, usually with only a thin white line at the mantle edge instead of a broad, diffuse white border.
Tropical and subtropical coral reefs, about 4–30 m.
Like other Hypselodoris, feeds on sponges.
