Sub Sphere: What Protects Human Deep Divers? | National Geographic

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. ➡ Subscribe: About National Geographic: National Geographic is the world’s premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what’s possible. Get More National Geographic: Official Site: Facebook: Twitter: Instagram: Sub Sphere: What Protects Human Deep Divers? | National Geographic National Geographic