Marionia distincta is a species of sea slug, a dendronotid nudibranch, a marine gastropod mollusc in the family Tritoniidae.MolluscaBase (2019). MolluscaBase. Marionia distincta Bergh, 1905. Accessed on 2021-01-12.
Distribution This species was described from station 315, the anchorage at Pulau Sailus Besar, Paternoster Islands (Tengah Islands, ) from a dredge with maximum depth of 36 m and a seabed of coral and Lithothamnion.
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