Actinocyclus papillatus
Actinocyclus papillatus is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Actinocyclidae. Distribution 
Actinocyclus papillatus is found in the tropical Western Indo-Pacific Ocean. Description
This nudibranch grows up to 100 mm in length. Ecology

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Chromodorididae
Gastropods described in 1878