Chromodoris nona is a species of colourful sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.Caballer, M. (2015). Chromodoris nona (Baba, 1953). In: MolluscaBase (2015). Accessed through: World Register of Marine Species on 2015-12-06
Distribution This marine species was described from a single specimen collected at depth at Amadaiba, Sagami Bay, Japan, . It has been reported from Hong Kong and locations in Japan including Osezaki.Kimoto, N., 2019. Chromodoris nona Seaslug World [in Japanese]
Description 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 . Chromodoris nona Umiushi-zukan, published 2015/11/29.Debelius, H. & Kuiter, R.H. (2007) Nudibranchs of the world. ConchBooks, Frankfurt, 360 pp. . page: 155
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