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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...
Tom Peschak, a photojournalist with the Save Our Seas Foundation, describes the...
by Caty Fairclough Sharks have been feared hunters ever since people first...
The pre-industrial American landscape was once rightly described as a place...

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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, rather than bone. Scientists...
The smallest shark, a dwarf lantern shark ( Etmopterus perryi ) is smaller...
A thresher shark’s long tail fin helps not only its swimming ability, but...

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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 Ocean Blog

The foot-long extinct shark Falcatus falcatus lived during the early Carboniferous period around 325 million years ago. The species, known from fossils in the Bear Gulch formation of Montana , was...
Millions of sharks are caught each year for their dorsal fins, which are prized for shark fin soup. Top predators like sharks are important to maintaining biodiversity, and their removal can have...
Christian McDonald, the Scientific Diving Safety Officer at the Scripps Institution of Oceanography, tows a surface float at Millennium Atoll in the South Pacific.
Ever heard of a cookie-cutter shark ( Isistius brasiliensis )? They look like your average shark —sort of menacing and streamlined—but their name comes from how they feed. They eat smaller animals (...
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 .
The Malpelo Fauna and Flora Sanctuary site in Colombia was inscribed on the World Heritage List in 2006. The marine park surrounding Malpelo Island is the largest no-fishing zone in the Eastern...
The fossil tooth whorl of the ancient shark Helicoprion , dating back 290 million years before present. For a long time, people didn't know what the shark looked like—but, thanks to a CT scan of a...
A male great hammerhead shark swims in the Bahamas at sunset in this image captured by National Geographic photojournalist Brian Skerry. For nearly 30 years, Skerry has been swimming with and...
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 .
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...
Come play in South Africa’s False Bay, where wild creatures roam. Print out this board game to play at home or school.
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...
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...
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...
Dr. Mahmood Shivji of the Guy Harvey Research Institute and Save Our Seas Shark Center sampling a confiscated shark fin for DNA analysis. He can determine the species for hundreds of shark fins using...
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...
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 (...
A scientific illustration of the most powerful fish of its time, Carcharodon megalodon , which swam the ocean 30 million years ago. This shark may have reached a size of 20 meters/66 feet. Meet other...
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