Oceans: Sub Sphere: What Protects Human Deep Divers?
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© National Geographic
Sub Sphere: What Protects Human Deep Divers?
When James Cameron dives to the lowest point of the Pacific's Mariana Trench, 36,000 feet of water pressure is bearing down on his sub, which feels like 13 cars weighing on each of his shoulders! But he's protected by sitting inside a 2 1/2 inch thick steel ball.