Which phylum consists exclusively of marine a | vedclass

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(B) The phylum $Echinodermata$ consists of organisms that are exclusively marine. These animals are characterized by an endoskeleton of calcareous oss

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Echinodermata

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(B) The phylum $Echinodermata$ consists of organisms that are exclusively marine. These animals are characterized by an endoskeleton of calcareous ossicles and a water vascular system,which is a unique feature of this phylum. Other options like $Protozoa$,$Platyhelminthes$,and $Mollusca$ contain both marine and freshwater or terrestrial species.

Which phylum consists exclusively of marine animals?

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