Are echinodermata vertebrates

Any member of the Phylum Cnidaria is an invertebrate as they do not have a backbone or spinal cord. Cnidarians include jellyfish, polyps (e.g. Corals and anemones) and other marine stingers.

Vertebrates include only some members of the Phylum Chordata: specifically, mammals, birds, fish, reptiles and amphibians.