Dynamena crisioides Lamouroux, 1824
Borderless hydroid
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Family:  Sertulariidae ()
Max. size: 
Environment:  sessile; brackish; marine; depth range 0 - 37 m
Distribution:  Pacific Ocean and Western Atlantic. Subtropical and tropical.
Diagnosis:   
Biology:  Colonial (Ref. 19). Known from mangroves (Ref. 86642, 86643), on roots of Rhizophora sp. (Ref. 86642), tidal inlets, exposed areas of bays, including any ledges at their entrance, sounds and caves (Refs. 86643). Also found in Carrie Bow Cay, Belize, in mangrove islands on mangrove roots at depths of 0 to 0.5 m (Ref/ 87156). Also on hard substrate (Ref. 116013). As with other hydroids, this species exhibits a pelagic medusoid stage (Ref. 87156).
IUCN Red List Status: Not Evaluated (N.E.) Ref. 123251)
Threat to humans: 
Country info:  Known from São Paulo, Espirito Santo, Bahia, Pernambuco (Ref. 813).

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