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Starting this Sunday, August 1st, the fins will be circling on a television near you. Sunday kicks off The Discovery Channel’s “Shark Week,” an annual TV ritual that offers hours of programming about sharks—some...
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...
by Caty Fairclough Sharks have been feared hunters ever since people first...

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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...
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...
It's illegal to hunt threatened species such as the Dusky shark, but still tens of millions of sharks are taken each year for their fins—in high demand as a delicacy in China. Inside his laboratory...
Named for the radiant blue color on its back and sides, the blue shark ( Prionace glauca ) traverses the world’s temperate and tropical seas. Known for traveling great distances and being a swift...
Two fossilized teeth from a megalodon ( Carcharodon megalodon ) dating back more than 20 million years. Their teeth can reach a diagonal length of seven inches! The ancestry of great white sharks has...
A life-sized model suspended over visitors at the San Diego Natural History Museum shows what an ancient shark, the Giant Megatooth ( Carcharodon megalodon ), might have looked like. More about the...
Omoo, a Great White Shark ( Carcharodon carcharias ), carries a satellite tag that sends information daily about her movements across the Pacific. Follow her migration real-time . More about the...
Starting this Sunday, August 1st, the fins will be circling on a television near you. Sunday kicks off The Discovery Channel’s “Shark Week,” an annual TV ritual that offers hours of programming about...
Grey reef sharks ( Carcharhinus amblyrhynchos ) are among the most versatile and tough predators on a Pacific coral reef, but they are also among the most vulnerable species, as they are threatened...
Great White Sharks are stealthy hunters and the secret is in their skin. Shark skin is covered by tiny flat V-shaped scales, called dermal denticles, that are more like teeth than fish scales. These...
Great White Sharks breach to hunt -- with split-second timing they grab an unsuspecting seal or sea lion in one swift snatch. Follow the action in this slideshow .
“This shark was cruising low along the reef known as Alcyone. Her left eye was glancing up toward other hammerheads when I took this shot from below.” -- Nature's Best photographer, Alan Studley. See...
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...
The blue-spotted stingray ( Taeniura lymma ) doesn’t like to be covered in sand like other species of stingray do. Instead, it prefers to show off its beautiful blue spots and, to stay up to the best...
For the last 150 years, paleontologists have debated the origins of the great white shark . Many believe that they descended from the 50-foot megalodon, also known as the megatooth shark (...
Sharks have six highly refined senses: smell, hearing, touch, taste, sight, and electromagnetism. These finely honed senses, along with a sleek, torpedo-shaped body, make most sharks highly skilled...
Imagine an adult person – now triple that size. That’s the size of the great white shark ( Carcharodon carcharias ). The biggest great white sharks can reach up to 20 feet long, but most are smaller...
Great White Sharks breach to hunt -- with split-second timing they grab an unsuspecting seal or sea lion in one swift snatch. Follow the action in this slideshow .
A thresher shark’s long tail fin helps not only its swimming ability, but also its ability to hunt. It can use the fin to herd and trap schooling fish by swimming in increasingly smaller circles...
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