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Blue Shark

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An extreme close-up shows a seven-foot (two-meter) blue shark swimming near the surface of the ocean off the coast of France. Blues and many other sharks thrive in the open ocean, where an explosion of life creates a feast for the sea's top predators.

Buy the book Planet Ocean for more photos.

Photograph by Jean-Georges Harmelin

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Eighteen percent of the world's population can't get safe drinking water. Test your water knowledge.

Photo Tip of the Week

Long Exposures

When making long exposures, use a remote release to avoid camera movement. If you don't have a remote release, use the camera's self-timer.

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The Complete National Geographic

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Explore 120 years of amazing discoveries, fascinating maps, and the world's best photography.

Photography Guides

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Guides by National Geographic photographers.

The National Geographic Image Collection Book

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Own images from one of the finest and most extensive image collections on Earth.