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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 roamed on land. Now-extinct ancestors of...
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Sophi Bromenshenkel is an unlikely shark -lover. She's eight years old and...
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Great white sharks are athletic hunters, leaping completely out of the water as...
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Reef sharks rarely get any love. These sharks, comprising several species,...

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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 tagged animal, dubbed "Rio Lady,"...
An X-ray image of a Monterey skate ( Raja montereyensis ) reveals a spine...
"Tens of millions of sharks are killed each year, often only for their fins...

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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...
Save Our Seas scientist Alison Kock tags a Great White Shark ( Carcharodon carcharias ) to gather data about their movements off the coast of South Africa. More about the great white shark can be...
The goblin shark ( Mitsukurina owstoni ) is one of the creepier fish out there! It has a long, prominent snout covered with special sensing organs (ampullae of Lorenzini) that help it to sense...
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...
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...
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 . Learn more about the great white...
For many years, shark fin soup has been a popular delicacy at weddings and formal occasions in China. Recently, it has become clear that shark-fin removal is cruel to sharks and severely damages...
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...
Tom Peschak, a photojournalist with the Save Our Seas Foundation, describes the devastating effects shark nets have on ocean life along the South African coastline. The nets were installed to protect...
Gray reef sharks ( Carcharhinus amblyrhynchos ) are known for being active at night. They are considered Near Threatened by the IUCN Red List due to fishing and the loss of their coral reef habitat...
In November 2012, Australia began protecting a huge swath of its ocean from overfishing and oil exploration, creating the largest network of marine reserves in the world at a grand total of 1.2...
Unlike the hammerhead, the oceanic white-tip shark ( Carcharhinus longimanus ) is aggressive towards humans. It has been noted as a danger toward those stranded at sea, and is very powerful during...
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...
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,...
It's hard to imagine a 2000-pound animal launching itself out of the water while hunting, but the great white shark does just that. This spectacular behavior is called breaching, and great white...
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...
Long before great white sharks appeared, much larger ancestors roamed the ocean. This giant ancient shark -- the Giant Megatooth ( Carcharodon megalodon ) -- was probably big enough to eat a whale.
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...
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...
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