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New Fossil Croc Is Biggest Yet
The 27-foot-long predator may have ambushed early humans in what's now Kenya, a new study says.
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Photos: Ancient Pygmy Pipehorse
Fossils of a new species of pygmy pipehorse, a tiny relative of the seahorse, have been unearthed in Slovenia.
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Pygmy Shark Glows Into Hiding
In what may sound like soggy logic, the smalleye pygmy shark hides in the dark by lighting up, a new study says.
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Best Underwater Pictures
From the ocean's biggest fish to tiny sea slugs with big color, the stars of an annual contest help reveal "the ocean through other eyes."
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White Killer Whale Spotted
Iceberg the Orca may be the only known all-white adult killer whale, and his strange skin color remains a mystery.
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Why the Mariana Trench Is So Deep
Now that James Cameron has made it to the bottom of the Mariana Trench, learn about the forces that made the abyss so deep.
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Last Chance to Dive to Titanic?
A hundred years after the Titanic sank, tourists can now go on a dive to the legendary wreck—but some experts want the "grave site" left alone.
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Little Life in Earth's Deepest Spot?
James Cameron describes Challenger Deep as a desolate, "lunar" environment, saying the dive felt as if he'd gone to another planet.
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Cameron's Historic Dive Cut Short by Leak; Few Signs of Life Seen
Despite technical challenges, James Cameron made history Monday in the Mariana Trench, which he said "looked like the moon."
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Cameron Trench Dive Breaks Record
Filmmaker-explorer James Cameron just became the first human to reach Earth's deepest abyss alone—and the only one to explore it in depth.
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James Cameron Now at Ocean's Deepest Point
Explorer-Filmmaker Reaches Mariana Trench Bottom on Deepest Ever Solo Sub Dive
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Cameron Descending to Trench
After years of preparation and days of uncooperative weather conditions, James Cameron is sinking fast to Earth's deepest, and perhaps most alien, realm in his futuristic sub.
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Cameron to Dive to Deepest Point
In a sci-fi craft, James Cameron has just broken the record for deepest solo-piloted sub dive. Now he's headed for Earth's deepest point.
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First Look: Cameron's Sci-Fi Sub
The custom-made sub for James Cameron's dive to Earth's deepest point sports a vertical design, a robotic arm—and an eye-popping paint job.
Ocean Videos
Ocean Topics
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Acidification
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Ballard, Robert
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Bowermaster, Jon
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Cook-Wise
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De Rothschild, David
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Doubilet, David
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Earle, Sylvia
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Frozen Seafood Benefits
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Goodman, Beverly
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Habitat Destruction
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Invasive Species
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Kristof, Emory
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Marine Food Chain
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Marine Pollution
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Nicklen, Paul
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Norman, Brad
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Ocean Overview
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Overfishing
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Plastiki
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Pristine Seas Expeditions
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Sala, Enric
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Seafood Decision Guide
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Seafood Substitutions
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Sea Level Rise
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Sea Temperature Rise
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Seaver, Barton
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Sustainable Seafood
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Thys, Tierney
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Tips to Save the Ocean
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National Geographic Magazine
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Tide Pools Pictures
A cast of thousands clings to rocky real estate in a narrow strip of shore called the intertidal zone.
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Great Barrier Reef Photo Gallery
From tiny coral polyps grew a marvel: Australia’s Great Barrier Reef. Could it all come crumbling down?
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The Acid Sea
Carbon dioxide we pump into the air is seeping into the ocean and slowly acidifying it.
Your Ocean
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For Kids
Learn about the ocean with activities, photos, and games.
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Ocean Education
Bring engaging and important ocean learning to your classroom.
Support the Ocean
Help protect the last healthy, undisturbed places in the ocean so we can learn how to help healthy reefs thrive, help unhealthy reefs recover, and better preserve the ocean.
Explore the Ocean
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Ocean Life
Order ocean books, DVDs, maps, and more from the National Geographic online store.
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Ocean Special Issue
Explore the world's oceans, from their prehistoric beginnings to modern-day efforts to preserve their natural wonder.
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Citizens of the Sea
Dive into astonishing diversity of ocean life from marine scientist Nancy Knowlton and the Census of Marine Life.