Hydrozoa | Anthoathecata
Environment / Climate / Range
Sessile; brackish; depth range 1 - 7 m (Ref. 3086). Polar
Atlantic, Pacific, Mediterranean, and Arctic Oceans. Polar and subtropical.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Megabenthic species (Ref. 2952). Found at depths of 1 to 7 m on rocks or living as an epizoite on ascidians, barnacles, mussels, and sponges. Colonial (Ref. 3086). Known from sheltered areas of bays, including mangrove shores and sounds (Ref.86643). Reproduction occurs only in hydroid stage (Ref. 1663, p. 13).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Reproduction occurs only in hydroid stage (Ref. 1663, p. 13).
Migotto, A.E., A.C. Marques, A.C. Morandini and F.L. da Silveira. 2002. (Ref. 813)
Small unfascicled colonies; cnidome comprising only microbasic euryteles; female and male blastostyles completely reduced; immature female gonophore with unbranched spadix (Ref. 3086).
IUCN Red List Status (Ref. 114614)
CITES status (Ref. 94142)
Threat to humans
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Estimates of some properties based on models
): 5.8 - 25.2, mean 12.1 (based on 3066 cells; Ref. 115970