PicrylDon Walsh, the first human ever to reach the ocean’s deepest point, died this week at the age of 92. In 1960, Walsh, then 28, was a lieutenant in the U.S. Navy. He had never been deeper than 300 feet, but volunteered for the mission in the Trieste, a “bathyscaphe” or deep-sea submersible, to the Challenger Deep, almost seven miles down in the Pacific Ocean’s Mariana Trench. The pressure at that depth is 7.5 tons per square inch. When Walsh and his crewmate, Swiss oceanographer Jacques Piccard, reached the bottom, the Trieste disturbed the silt and they could see nothing: “It was like looking at a bowl of milk,” Walsh said years later, “so we never got a photograph of the deepest place in the ocean.” |