Chromodoris nona is a species of colourful sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.[1]
This marine species was described from a single specimen collected at depth at Amadaiba, Sagami Bay, Japan, 35.261°N 139.563°W. It has been reported from Hong Kong and locations in Japan including Osezaki.[2]
Chromodoris nona is a translucent white chromodorid nudibranch with an opaque white edge to the mantle. There are conspicuous white glands embedded in the mantle margin. The rhinophores and the gills are yellow-orange in colour. The length of the body attains .[3] [4]