Halecium nanum Alder, 1859
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Family:  Haleciidae ()
Max. size: 
Environment:  benthic; brackish; marine; depth range 0 - 31 m
Distribution:  Mediterranean, Atlantic and Arctic Oceans: Mostly polar, but also in subtropical, tropical and boreal.
Diagnosis:   
Biology:  Minimum depth from Ref. 116013. Known from mangroves (Ref. 86642), tidal inlets, exposed areas of bays, including any ledges at their entrance and surface or near surface water layers, including porpitids and the halopelagic Sargassum sp. fauna; limited to shallow benthic habitats (Ref. 86643). Also found in Carrie Bow Cay, Belize, in patch reefs, Thalassia sp. beds, back reef, outer ridge and fore-reef slopes on substrates composed of dead corals and gorgonians at depths of 3 to 31 m. As with other hydroids, this species exhibits a pelagic medusoid stage (Ref. 87156). Epipelagic (Ref. 116013).
IUCN Red List Status: Not Evaluated (N.E.) Ref. 123251)
Threat to humans: 
Country info:   
 

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