Jellyfish

Jellyfish is a kind of aquatic invertebrate animals belonging to the phylum of Cnidaria, the jellyfish referred to here are animals of the Schypozoa class, so often called true jellyfish not to be confused with other animals also called jellyfish such as: Ctenophora (jellyfish comb) and Cubozoa (box jellyfish). As members of Cnidaria, they have two body shapes: polyps attached to the seafloor and medusa which can swim freely and are in reverse cup.