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Rays are a group (superorder Rajomorphii or Batoidea) of cartilaginous fishes. They are extremely flat but closely related to the sharks. According to recent DNA analyses the cat shark is more closely related to the rays than to other sharks. Young rays look very much like young sharks.

Most rays live at the bottom of the sea. Only a few species live in the open sea or in freshwater. Rays feed on crustaceanCrustaceans Hyalella azteca Scientific classification Kingdom: Animalia Phylum: Arthropoda Subphylum Crustacea Classes Remipedia Cephalocarida Branchiopoda Ostracoda Maxillopoda Malacostraca The crustaceans (Crustacea) are a large group of arthropods (55,s or fishAtlantic herring, Clupea harengus one of the most abundant species in the world Photo A fish is a poikilothermic (cold-blooded) water-dwelling vertebrate with gills. There are over 27,000 species of fish, making them the most diverse group of vertebrates., depending on the species. No ray can kill humans, but the stingray can inflict a painful sting.

For the main types of rays see stingrayThis article is about the fish. For other uses of the word see Other Uses below. See text The Stingray is any of a class of cartilaginous marine animals of the subclass Elasmobranchii, orders Myliobatiformes (rays) or Rajiformes ( skates), found in both ss, eagle rays, cow nose rays, manta rays, electric rays, and sawfishes.