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Black Nudibranch (Dendrodoris Nigra)

A Black Nudibranch (Dendrodoris Nigra) photographed beneath Chaloklum pier.

This individual, with its small white markings on the dorsal surface, appears to be one of at least two variations of this species (both of which can be found below Chaloklum pier), the other being almost entirely black with the exception of an orange and/or white margin around the "foot".