hydrozoa

• Clase taxonómica de cnidarios en la que generalmente se alternan generaciones: la fase pólipo o hidroide suele ser colonial y produce por gemación la fase medusa; incluye hidras y medusas.

A taxonomic class of coelenterates that typically exhibit alternation of generations, where the hydroid phase is usually colonial and gives rise to the medusoid phase by budding; includes hydras and jellyfishes.

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1. Class of aquatic animalsC2formalscientific

   A class of small, predatory aquatic animals within the phylum Cnidaria, typically having both a polyp and a medusa stage in their life cycle.

   Hidrozoos

   • The class Hydrozoa includes familiar animals like hydras and some jellyfish.
   • Many Hydrozoa species form complex colonies, such as the Portuguese man o' war.
   • The life cycle of Hydrozoa often alternates between a sessile polyp stage and a free-swimming medusa stage.