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Cordylophora caspia non-native
Species, Coelenterate (=cnidarian), Freshwater, marine, terrestrial
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Craspedacusta sowerbii non-native
Species, Coelenterate (=cnidarian), Freshwater, terrestrial
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Hydra circumcincta
Species, Coelenterate (=cnidarian), Freshwater, marine, terrestrial
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Hydra oligactis – Brown hydra
Species, Coelenterate (=cnidarian), Freshwater, terrestrial
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Hydra viridissima – Green Hydra
Species, Coelenterate (=cnidarian), Freshwater, terrestrial
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Hydra vulgaris – Common Hydra
Species, Coelenterate (=cnidarian), Terrestrial
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Stylactis fucicola
Species, Coelenterate (=cnidarian), Marine, terrestrial
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