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North Atlantic and North Pacific: Asia outside western Palearctic.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm Max length : 2.5 cm WD male/unsexed; (Ref. 2376)
Form circalittoral rocks and other hard substrata (Ref. 1314). Medusae in the Russian Far-east are extremely venomous compared to those from the northwest Pacific; in the west coast, they are found in summer attached to eel grass Ulva sp. or laminarian algae; feed on copepods (Ref. 2376).
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Species listed only in medusoid stage (Ref. 1663, p. 18).