BIOTIC Species Information for Tenellia adspersa
Researched byNicola White Data supplied byMarLIN
Refereed byDr Richard S.K. Barnes
Distribution and Habitat
Distribution in Britain & IrelandThe few British records are from the Bristol Channel and the Fleet in Dorset.
Global distributionRecorded from the eastern and western North Atlantic, Baltic, Mediterranean Sea, Black Sea, Azov Sea, Caspian Sea, Japan, Pacific coast of USA, Brazil
Biogeographic rangeNot researched Depth range1 to 34 m
MigratoryNon-migratory / Resident   
Distribution Additional InformationRecorded at depths from 1 to 34 m. The species has been observed to survive and breed in salinities from 50 psu to 5.3 psu. The ranges and ecological features of the nudibranch are very similar to the hydroid Cordylophora caspia and they co-exist everywhere, which suggests some connection. The wide geographic distribution of Tenellia adspersa is probably due to passive transportation of adults and egg masses by Cordylophora colonies on ships.

Substratum preferencesSeagrass
Artificial (e.g. metal/wood/concrete)
Small boulders
Physiographic preferencesEstuary
Isolated saline water (Lagoon)
Enclosed coast / Embayment
Biological zoneLower Eulittoral
Sublittoral Fringe
Upper Infralittoral
Wave exposureSheltered
Very Sheltered
Tidal stream strength/Water flowStrong (3-6 kn)
Moderately Strong (1-3 kn)
Weak (<1 kn)
SalinityVariable (18-40 psu)
Low (<18 psu)
Habitat Preferences Additional Information
Distribution References Picton & Morrow, 1994, Hayward & Ryland, 1995b, Antsulevich & Starobogatov, 1991, Anonymous, 1999(s),
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