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Hexabranchidae

The family Hexabranchidae includes flattened species with an inrolled mantle margin that can be "unfurled" for display and swimming. There are two flattened, lobate oral tentacles and the gills cannot be retracted into pockets. Among the world's largest nudibranchs, they are nocturnal sponge feeders. Two probable species are known from Hawaii in one genus (Hexabranchus).

Although this family had long been placed with the cryptobranch dorids, recent work (Valdez, 2002a) suggests that it should be placed with basal phanerobranchs, instead.


Hexabranchus aureomarginatus

Hexabranchus pulchellus

 
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