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Sharks are a group of elasmobranch cartilaginous fishes characterized by a ribless endoskeleton, dermal denticles, five to seven gill slits on each side, and pectoral fins that are not fused to the head. …

At SharkNinja, we stand behind the quality and performance of every product we create. * Order by Dec 19 at 2:00 PM ET for delivery by Dec 25 in most regions with free 2-day shipping. Exclusions apply …

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Dec 7, 2025 · 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 …

An annotated and illustrated catalogue of shark species known to date. by Leonard J.V. Compagno, Ph.D., the world’s foremost expert on sharks and Director of our Board of Trustees.

Find out about the world's biggest and fastest sharks, how sharks reproduce, and how some sp...

Although most shark species inhabit the seas, a few exceptions including the river shark and bull shark can swim both in freshwater and seawater. They commonly live at depths of about 2,000 m (7,000 ft) …

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.

1 day ago · Everyone's favorite white shark, Contender, is back on the move again, this time toward warmer seas for the winter. He was the largest male white shark ever recorded in the Atlantic, …