Hydrozoa | Anthoathecata
Cairns, S.D., D.R. Calder, A. Brinckmann-Voss, C.B. Castro, D.G. Fautin, P.R. Pugh, C.E. Mills, W.C. Jaap, M.N. Arai, S.H.D. Haddock and D.M. Opresko. 2003. (Ref. 1663)
Size / Weight / Age
Max length : 5.0 cm H male/unsexed; (Ref. 8774)
Climate / Range
Sub-arctic, temperate and subtropical waters of the Northern Atlantic.
Found in areas exposed to currents and waves, on a variety of substrates such as platform piles (Ref. 96377). Sessile (Ref. 3123). Reproduction occurs only in hydroid stage (Ref. 1663, p. 14).
IUCN Red List Status (Ref. 114614)
CITES status (Ref. 94142)
Threat to humans
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Estimation of some characteristics with mathematical models