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A thresher shark uses its unusual tail fin for swimming and hunting.
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The Thrashing Thresher Shark

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A whale shark swimming in the water.
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Tagging Along With Whale Sharks

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Shark Sizes: Whale Shark 46 feet, Basking Shark 33 feet, Great White Shark 23 feet, Megamouth Shark 15 feet, Nurse Shark 13 feet, Mako Shark 8 feet, Blacktip Reef Shark 6.5 feet, Bonnethead Shark 3.4 feet, Dwaf Lantern Shark 6 inches
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What is the Biggest Shark? A Chart Shows the Diversity of Shark Sizes

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Great White Sharks breach to hunt -- with split-second timing they grab their prey in one swift snatch. Follow the whole breaching action in this slideshow.
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Breaching Great White Shark on the Hunt

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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 Tropical Pacific, providing critical refuge for threatened and
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Malpelo Fauna and Flora Sanctuary, Colombia

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Eugenie Clark collecting specimens on a dive.
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Eugenie Clark - The Shark Lady

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A shortfin mako glides through the waters off the coast of California.
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Shortfin Mako Shark

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A blue shark, with a copepod attached to its dorsal fin, coasts through waters near New England.
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Blue Shark

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An oceanic whitetip shark swims near a biologist in the Bahamas.
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Oceanic Whitetip Shark

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“It was shaping up to be a bad night dive when my mask broke and I was forced to come up early. The others continued diving and I was becoming a bit bored at the surface when I suddenly spotted some grey reef sharks hunting in the light of our ship. I to
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Grey Reef Shark, West New Britain, Father Reefs, Papua New Guinea

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"This particular shark was just as curious as I was, which enabled me to capture such an amazing shot. His eye came just above the surface and stared back at me as if to show me he was watching, while below the surface his mouth opened to reveal his sharp
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Lemon Shark, Offshore Grand Bahamas Island

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A bamboo shark grows in a thick egg case. Even within the egg case, the embryonic sharks can sense predators nearby and, in response, stop all gill movement and hold still to slip under the radar.
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Shark Embryo

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