Platydoris scabra (Cuvier, 1804)

While not abundant, Platydoris scabra is probably the least uncommon large cryptobranch dorid in Marshalls. We have seen specimens at Kwajalein, Enewetak, and Utirik Atolls. They are typically found under dead coral on lagoon reefs at depths of 1 to 8 meters. The harbor on Kwajalein has been one of the best places to find them, where they often live under sheets of aluminum siding blown into the water during storms. Larger specimens can exceed 100mm in length.

Young specimens frequently have yellow margins. The one below measured 30mm and was found under a rock at a depth of 5m in the Marshall Islands atoll of Utirik.

Slightly larger ones, about 25-30mm long, still have the yellow edges to the rhinophore and gill pockets, but it is disappearing from the mantle margin.

The two photos below show Platydoris scabra with its egg masses.

Created 15 December 2006
Updated 3 October 2008

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