Drain the Oceans: Submerged Secrets of America | MEGA EPISODE | National Geographic

Chicago: Chicago’s extraordinary past emerges from the waters of Lake Michigan. New York City: Submerged shipwrecks and subterranean secrets reveal the story of New York City’s rise. Hollywood: Hollywood's surprising hidden history lies buried beneath the sea and sand. The Wild West: What was real life like in the Wild West, and who was left out of the story? National Geographic is the world's premium destination for critically acclaimed storytelling around science and exploration.

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