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A close examination of the Hydra kicks off this program, which yields a remarkable series of observations regarding the freshwater cnidarian's habitat, structure, feeding, nematocyst discharge, locomotion, and sexual and asexual reproductive strategies. The genus Obelia illustrates the 2-stage life cycle found in many cnidarians. Rounding out the investigation of the phylum Cnidaria is the examination of jellyfish (class Scyphozoa), sea anemones, and corals (class Anthozoa). Close-captioned.
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