The phylum Cnidaria contains two clades: Anthozoa and Medusozoa. There are around 3800 species within the clade
Hydroidolina … Meer weergeven

Hydroidolina are commonly found in a variety of marine environments across the world such as deepwater caves or brackish and fresh shallow waters, and can exist as solitary or colonial. Benthic polyps can be foun… Meer weergeven

Hydroidolina are carnivorous suspension feeders. Motile medusa use their cnidocytes and tentacles to capture prey. Meer weergeven

Cnidarians are united by the common characteristic of having a specialized cell called a cnidocyte, which contains an explosive organelle called a cnidocyst, or stinging cell. In Hydrozoans, the cnidocysts are f… Meer weergeven

The Hydroidolina follows a biphasic life cycle, which alternates in occurrence as planula larva, asexual colonial sessile polyps and free-swimming sexual medusa, not all of which may be present in the one life c… Meer weergeven

Other hydrozoan classifications, which are beset by paraphyly however, are still often seen. They do not unite the Leptolinae in a monophyletic taxon and thus do not have any merit according to modern … Meer weergeven