Modern sharks are classified within the division selachii[1] and are the sister group to the batomorphi (rays and skates). Shark, any of numerous species of cartilaginous fishes that make up the order selachii (class chondrichthyes) Most species have a tough skin that is dull gray in color and roughened by toothlike scales. A large shark killed a man surfing with friends over the weekend in a fatal attack in southeast australian waters, local officials said The incident took place off the northern beaches in sydney. An annotated and illustrated catalogue of shark species known to date
Compagno, ph.d., the world’s foremost expert on sharks and director of our board of trustees. Sharks can rouse fear and awe like no other creature in the sea Find out about the world's biggest and fastest sharks, how sharks reproduce, and how some species are at risk of extinction. Sharks are often characterised as vicious killers, but in reality, they’re a diverse and endangered group of creatures that add tremendous value to marine ecosystems Despite having a reputation as vicious, bloodthirsty predators, sharks are much more benign, varied and diverse than their portrayal in popular culture suggests.
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