The ocean is significantly deeper than the highest point on Earth's surface. If you took the highest point on land and submerged it, you would still have more than a mile between you and the deepest point in the ocean. The Challenger Deep is the deepest point on Earth. In 1960, oceanographer Jacques Piccard and Lt. Don Walsh descended to the lowest point on Earth, Challenger Deep, at a record 25,979 feet below the surface. Scientists have sent half a dozen unmanned submersibles to explore Challenger Deep including Kaiko, which collected over 350 species on the seafloor between 1995 and 2003.

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Persons: Cuvier, Robert Smits, Herbert Nitsch, Nitsch, We've, Ralph White, Mariana Trench, Trench, Jacques Piccard, Don Walsh, Victor Vescovo, Vescovo Organizations: Service, USS Triton Locations: California, Austrian, Mariana, Everest