Also known as devil fish or stingray, it is a large marine fish that lives in tropical and subtropical waters. Known for their unique flat body and wide wing shaped pectoral fins, which enable them to glide gracefully in water. The body size is usually large, with some species having a wingspan of up to 7 meters. There are various colors, ranging from deep blue to light gray, and some species even have spots or patterns. It mainly feeds on plankton, small fish, and crustaceans, and consumes food through the use of a filtering system at the mouth. Usually swimming near the seabed or sea surface, sometimes jumping out of the water for spectacular jumping movements. Gentle creatures that are not aggressive towards humans.

Izu rays are a medium-sized benthic fish with a body disc width of up to 73 centimeters. It is a nearshore species mainly found on the continental shelf, with a known depth range of 10-25 meters, but may appear in deeper places; In the East China Sea, it has been reported at a depth of 180 meters. The pectoral fin plate of the Izu stingray is diamond shaped, slightly wider than long, with a smooth golden brown color, and a whip like tail with a low keel above and a fin fold below. The fin folds are white, which distinguishes the Izu ray from all other Pacific members of its family.

Ray fish, a general term for cartilaginous fish in the order Rayiformes. The body shape is flat, slightly circular or diamond shaped, resembling a thin disk; The surface of the fish has various patterns, which are brown or black in color; The abdomen is white; The tail is slender, with spines on the caudal peduncle, and the tip of the spines is hooked. The stingray is also known as the "devil fish".