Cuthona nanaCuthona nana is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Cuthonidae.Taxonomic historyThis species was named in 1842. In 1848 the same authors described Eolis peachii from Fowey harbour, Cornwall. The two species were considered to be the same by Brown, 1980.DistributionCuthona nana was described from specimens found under stones near low water mark at Cullercoats and Whitley Bay on the North Sea coast of England. It is reported from the NE Atlantic from Greenland and Spitsbergen south to Brittany, France.EcologyFeeds on the hydroid Hydractinia echinata.