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Reef sharks rarely get any love. These sharks, comprising several species, loiter around coral reefs, snacking on small fish, squids and crustaceans. And while their size is nothing to smirk at—5-10 feet is pretty...
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Starting this Sunday, August 1st, the fins will be circling on a television...
Dr. Demian Chapman of the Institute for Ocean Conservation Science at New York’...
Tom Peschak, a photojournalist with the Save Our Seas Foundation, describes the...

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This fossil tooth whorl of the ancient shark Helicoprion , dates back 290 million years. For a long time, people didn't know what the shark looked like—but, thanks to a CT scan of a fossil, researchers finally put the pieces...
A male great hammerhead shark swims in the Bahamas at sunset. Scientists...
What would happen if we let our fear of sharks lead people to kill them all...

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There are more than 500 species of sharks swimming in the world’s ocean. Yet when most people think of these cartilaginous...
The smallest shark, a dwarf lantern shark ( Etmopterus perryi ) is smaller than a human hand. It's rarely seen and little is known about it, having only been observed a few times off the northern tip...
By-catch, illegal fishing, sport fishing, loss of prey and habitat and shark nets are threatening Great White Shark ( Carcharodon carcharias ) populations globally. More about the great white shark...
Large numbers of grey reef sharks ( Carcharhinus amblyrhynchos ) were observed at Jarvis Island, an uninhabited Pacific island, during the 2010 Pacific RAMP expedition of the NOAA Ship Hi'ialakai ...
Great white sharks ( Carcharodon carcharias ) are marvels of evolution, with highly-evolved senses keeping them among the ocean’s top predators. However, they are threatened with extinction and...
Sharks are much older than dinosaurs. Their ancestry dates back more than 400 million years, and they are one of evolution’s greatest success stories. These animals are uniquely adapted to their...
Great White Sharks ( Carcharodon carcharias ) are powerful swimmers, capable of going 50 kph / 35 mph. They can migrate long distances, from Hawaii to California, and from South Africa to Australia...
As far back as I can remember, I have always been fascinated by sharks. My father introduced me to the ocean through books, documentaries and diving, and whenever we would see sharks on a dive in the...
Lying in water only a foot deep, I watched the shark meander lazily through the mangrove, already exuding the confidence inherent of the supreme creature within its domain. It was hot here in Bimini...
Follow a journey with satellite tags placed on bull sharks and tarpon. Both of these large predatory fish are found in coastal in-shore ecosystems and the two species have similar diets. If given the...
This photo of a freshly cut dorsal fin from a scalloped hammerhead shark ( Sphyrna lewini ) , was taken in 2006 on a long-lined fishing boat in Cocos Island, 300 miles off the Pacific coast of Costa...
Sharks are one of nature’s most beautiful—and misunderstood—creatures. When most people think of sharks, they think of unexpecting swimmers being attacked and eaten by a nightmarish creature. But...
Shark nets are trapping and killing dozens of sharks off the coast of South Africa. More about the great white shark can be found in our Great White Shark featured story .
An X-ray image of a Monterey skate ( Raja montereyensis ) reveals a spine that extends like a tail out from the pelvic fin. The skeletons of skates, rays, chimaeras, and sharks are made of cartilage...
Sharks have young in three different ways. After internal fertilization, some species lay a thick egg case that encloses the shark embryo (seen in the photo here). Most species are ovoviviparous,...
An array of teeth from the sand tiger shark Carcharias taurus . The Smithsonian has the largest collection of shark teeth in the world, with more than 90,000 fossil shark teeth. More about sharks and...
Not all sharks are a dull gray: the coral catshark ( Atelomycterus marmoratus ), for example, is vibrantly colored. These sharks, which reach more than 2 feet long, live among coral reefs, eating...
What would happen if we let our fear of sharks lead people to kill them all? This is the question Joe Hanson asks in this video from PBS Digital Studios. Find out about how the removal of sharks...
This illustration shows one old idea of what the ancient shark Helicoprion might have looked like. There once was room for many ideas—some more plausible than others—because the only fossils of the...
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