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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...
What is scarier: sharks or extinction? This video from Save Our Seas puts...
Overview MORE STORIES Overview MORE AUDIO / VIDEO
Sharks are much older than dinosaurs. Their ancestry dates back more than 400...
Slideshow MORE STORIES Slideshow MORE AUDIO / VIDEO
Long before great white sharks appeared, much larger ancestors roamed the ocean...

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The shortfin mako shark ( Isurus oxyrinchus) is found offshore in tropical and warm temperate waters of all oceans, but has been known to travel to cooler waters at times. It is very strong and the fastest known species of shark...
This photo of a freshly cut dorsal fin from a scalloped hammerhead shark (...
The smallest shark, a dwarf lantern shark ( Etmopterus perryi ) is smaller...

DIVE DEEPER

There are more than 500 species of sharks swimming in the world’s ocean. Yet when most people think of these cartilaginous...
The sea's largest fish has been a mystery until recent decades. Thanks to electronic tags, researchers are uncovering some of the secrets of the whale shark ( Rhincodon typus Smith, 1828 ). One...
How does this skate ( Bathyraja richardsoni ) measure up? Researchers use underwater equipment to estimate its size. The marks on the meter-long scale bars are 10 cm apart. The yellow ribbons show...
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 ...
Come play in South Africa’s False Bay, where wild creatures roam. Print out this board game to play at home or school.
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 of a breaching sequence .
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...
Sophi Bromenshenkel is an unlikely shark -lover. She's eight years old and hails from Minnesota, a state that couldn't be further from the ocean. But a family vacation to Florida changed everything...
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...
What is scarier: sharks or extinction? This video from Save Our Seas puts whether we should fear sharks or they should fear us into perspective . Humans have killed killed off 95% of some shark...
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...
During the late Cretaceous period, Kansas was covered by a vast sea. There, scientists have found fossils of Squalicorax sharks (also called crow sharks) that lived 70-80 million years ago. They were...
Enric Sala has spent much of his career looking for the ocean's "time machines" -- areas rich in biodiversity and largely unaffected by humans. In this recorded webcast , Sala, a National Geographic...
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...
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...
In this episode of the Podcast of Life , students from Martha's Vineyard Regional High School in Massachusetts and La Salle Academy in Rhode Island question shark researcher Greg Skomal about a...
Several Caribbean reef sharks swim over a coral reef in the Bahamas in this image captured by National Geographic photojournalist Brian Skerry. For nearly 30 years, Skerry has been swimming with and...
Manta rays are related to sharks, but have quite a different reputation among humans. They are often called the gentle giants of the sea because of their curious nature and graceful movements. This...
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