Hydroïdpoliepen - Wikipedia
Hydroid | Characteristics & Life Cycle | Britannica
WEBhydroid, any member of the invertebrate class Hydrozoa (phylum Cnidaria). Most hydroids inhabit marine environments, but some have invaded …
ADW: Hydrozoa: INFORMATION
WEBThe Hydrozoa is a subgroup of cnidarians containging approximately 3700 species. It is a diverse group with a variety of life cycles, growth forms, and specialized structures. Like many cnidarians, hydrozoans have both …
Hydrozoa Information | Aquatic Invertebrates | Earth Life
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