Being alone at the bottom of the ocean with little to no visibility sounds like a nightmare for most people. For David Callahan, it's his happy place. Callahan, 30, is a commercial diver working on ...

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Over at National Geographic, marine ecologist Dr. Enric Sala is posting photos and accounts from his expedition, diving off the huge oil rigs in Gabon. The oil company TOTAL is allowing him and his ...

At this year's OC Fair, one of the most unique rides isn't a ride at all. It's a virtual plunge 100 ft. below the surface of the Pacific Ocean, and under one of California's offshore oil platforms, to ...

David Callahan is one of a few hundred people who are deep-sea oil rig divers, and he can’t imagine doing anything else Meredith Wilshere is a Society and Culture writer at PEOPLE. Her work has ...