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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...
Dr. Mahmood Shivji explains how shark DNA is used as evidence to prosecute...
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Sharks are one of nature’s most beautiful—and misunderstood—creatures. When...
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Long before great white sharks appeared, much larger ancestors roamed the ocean...

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At night this lemon shark ( Negaprion brevirostris ) lurks at the surface, but often during the day they will lie on the ocean bottom. This behavior had been thought to save them energy, but in reality it takes energy for the...
The distinctive form of a winghead shark ( Eusphyra blochii ) is revealed by...
Sharks have young in three different ways. After internal fertilization,...

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Sharks are much older than dinosaurs. Their ancestry dates back more than 400 million years, and they are one of evolution’s...

The Ocean Blog

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...
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 .
by Caty Fairclough Sharks have been feared hunters ever since people first observed them swimming in the vast ocean. Yet today, sharks are declining rapidly on a global scale because humans have...
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...
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...
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...
Perhaps the most distinctive marine animal of all—the Great Hammerhead has a unique hammer-shaped head that gives it large visual range. Like other sharks, the hammerhead has many teeth. More so than...
At night this lemon shark ( Negaprion brevirostris ) lurks at the surface, but often during the day they will lie on the ocean bottom. This behavior had been thought to save them energy, but in...
How do we know where ocean animals swim day and night? Scientists are getting snapshots into the daily lives of whales , sharks , and even fish by tagging the animals to track their movements. You’ve...
Whenever a shark attacks a human, it's headline news. But when a human kills a shark, it goes unreported. Fear keeps many people from caring about sharks. But sharks have more reason to fear us than...
In California, the Gulf of Farallones National Marine Sanctuary provides protection to Great White Sharks and other species. More about the great white shark can be found in our Great White Shark...
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.
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...
An oceanic whitetip shark swims near a biologist in the Bahamas in this image captured by National Geographic photojournalist Brian Skerry. For nearly 30 years, Skerry has been swimming with and...
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...
CREDIT: © Mary Parrish/Smithsonian Institution 1. Respect Your Elders Sharks have a long and impressive lineage. Ancient sharks were cruising the ocean 400 million years ago—long before dinosaurs...
Three bar jacks and a female tiger shark, nearly 4-meters long, swim off the coast of the Bahamas in this image captured by National Geographic photojournalist Brian Skerry. For nearly 30 years,...
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