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Cartilaginous Fishes

Cartilaginous fishes are a group of fishes that includes sharks, rays, skates, and chimaera. There are 810 species of cartilaginous fishes alive today. The articles listed below provide information about the characteristics, classification and evolution of cartilaginous fishes.

Cartilaginous Fishes
Cartilaginous fishes are a group of fishes that includes the largest and most formidable marine predators alive today.

Great White Shark
Great white sharks are solitary hunters that feed on seals, dophins, fish, and sea lions. This profile explores basic facts about great white sharks including how they are classified, what they eat, where they live and the characteristics that make them different from other sharks.

Great White Shark Traverses Indian Ocean
A satellite tracking study conducted by marine biologist Ramon Bonfil has for the first time revealed a transoceanic journey of a great white shark from South Africa to Australia and back.

Hammerhead Sharks
Hammerhead sharks are a group of sharks that include nine species. Hammerheads are so named for the wide, flattened hammer shape of their head.

Sharks, Skates and Rays
Sharks, rays, and skates form a group of boneless fishes called the elasmobranchs. There are about 800 species of elasmobranchs, of which over half belong to the Batoidea, a group that includes skates and rays.

Skates and Rays
Batoids are flat-bodied fish. Some species are bottom dwellers that feed on a smorgasbord of marine invertebrates such as clams, snails, oysters and crustaceans as well as the occasional small fish.

Whale Shark
Whale sharks are not fierce predators like their smaller cousin the great white shark. This profile explores basic facts about whale sharks including how they are classified, what they eat, where they live and the characteristics that make them different from other sharks.

Photo Monitoring Ningaloo's Whale Sharks
Whale sharks are anything but camera shy. Between 1995 and 2006, scientists, tourists, divers, and tour guides snapped more than 5100 underwater photographs of these gentle giants at Ningaloo Marine Park, off the coast of Western Australia.

Sharks Aren't Your Average Fish
Sharks are odd fishes. These sleek predators differ in a number of ways from other fishes and as a result, they are not tucked into the same clade that contains the 20,000-plus species of ray-finned fishes.

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