Scyphozoa | Semaeostomeae
Environment: milieu / climate zone / depth range / distribution range
Pacific Ocean: Alaska, Canada, Hawaii, Philippines and USA.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm Max length : 40.0 cm WD male/unsexed; (Ref. 2376)
Up to 30 cm wide, with 16 marginal lobes divided by more or less deep median clefts; canal system has may anastomoses; mouth-arms fairly short, thick, pyramidal, somewhat folded; subgenital ostia small. Color yellowish or light violet.
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). Planulae appeared in brood sacs beginning in October and November. The planulae were shed by the end of March and ephyrae emerged in June. Juvenile medusae were estimated to constitute about 30-40% of medusae in the bay in each of the two years of this study (Ref. 7682).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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.
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)
IUCN Red List Status (Ref. 120744)
CITES status (Ref. 108899)
Threat to humans
| FishSource |
Estimates of some properties based on models
Low to moderate vulnerability (30 of 100)