Trinchesia caerulea is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Trinchesiidae.Gofas, S. (2014). Cuthona caerulea. Accessed through: World Register of Marine Species on 2015-01-26
Distribution This species was described from Devon, England. It has been reported from the NE Atlantic from Norway south to Portugal and in the Mediterranean Sea. Records from Brazil and Florida probably represent a different species.Picton, B.E. & Morrow, C.C., 2016. Trinchesia caerulea. [In] Encyclopedia of Marine Life of Britain and Ireland.Rudman, W.B., 2000 (May 20) Cuthona caerulea (Montagu, 1804). [In] Sea Slug Forum. Australian Museum, Sydney.
Description The typical size of this species is 10–15 mm and the maximum recorded length is 26 mm.Thompson, T.E. and Brown, G.H., 1984. Biology of Opisthobranch Molluscs, Volume II. The Ray Society. 229 pages 41 plates, 40 figures
Habitat Found from the intertidal zone to 270 m. Trinchesia caerulea feeds on hydroids of the genus Sertularella.
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