Scyphozoa | Semaeostomeae
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 : 229 cm WD male/unsexed; (Ref. 99323)
Climate / Range
Arctic, North Atlantic and North Pacific. Restricted to waters of less than about 20°Celsius (Ref. 1663).
The tentacle of the longest medusozoa meaures 36.6 m (Ref. 99323). Members of the class Scyphozoa are gonochoric. Life cycle: Egg is laid by the adult medusa which later develops into a free-living planula, then to a scyphistoma to a strobila, and lastly to a free-living young medusa (Ref. 833).
IUCN Red List Status (Ref. 114614)
CITES status (Ref. 94142)
Threat to humans
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Estimation of some characteristics with mathematical models
Very high vulnerability (90 of 100)