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Phyllodesmium briareum (Bergh, 1896) [Ennoia]

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Phyllodesmium briareum feeds like other species of Phyllodesmium on soft corals. It rapidly drops off many of its cerata when disturbed (autotomise). This photo shows 2 specimens mating. The rows of brown specks in this photo are one-celled plants [zooxanthellae] which are nurtured in specialised ducts of the aeolid's digestive gland, where they continue to grow, reproduce and photosynthesise, providing nutrients for the aeolid. Bill Rudman calls this "Solar-powered Sea Slugs".
More information on Phyllodesmium briareum are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2016), published 17 December 2016, Phyllodesmium briareum (Bergh, 1896)
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Dexiarchia/Phyllodesmium_briareum.htm