"Hydra" has two main body layers, which makes it "diploblastic". Diploblastic animals are organized into recognisable tissues. In diploblastic animals only the ectoderm and the endoderm are present. Groups of diploblastic animals alive today include jellyfish, corals, sea anemones and comb jellies. The more primitive, diploblastic animal phyla lack circulatory systems. In diploblastic organisms, such as Cnidaria and Ctenophora, the gastrula has only ectoderm and endoderm. The bodyform is radially symmetrical, diploblastic and does not have a coelom. As such, they are sometimes called diploblastic. Some animals, like cnidarians, produce two germ layers (the ectoderm and endoderm) making them diploblastic. Hence ctenophores and cnidarians have traditionally been labelled diploblastic, along with sponges. They are diploblastic, having only two main germ layers, ectoderm and endoderm. Hence, cnidarians and ctenophores have traditionally been labelled diploblastic, along with sponges. The fried egg jelly and all other members of the phylum Cnidaria are diploblastic.