Hydrozoa | Leptothecata
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
Climate / Range
Central and north Atlantic, Pacific and Arctic Oceans. Mostly polar, but also in tropical and boreal.
Colonial (Ref. 19). Found in Carrie Bow Cay, Belize, in back reefs on algae at a depth of 0.5 m (Ref. 87156). Reproduction occurs only in hydroid stage (Ref. 1663, p. 20). Period of reproductive maturity recorded for Carrie Bow Cay, Belize is 20th May, during which the sample collected had gonophores or medusa buds (Ref. 87156).
IUCN Red List Status (Ref. 114614)
CITES status (Ref. 94142)
Threat to humans
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Estimation of some characteristics with mathematical models