Aug 2, 2023 · By Erik Olsen

Hannes Keller’s Deadly 1,000-Foot Descent off Catalina Island Was the Dive of the Century

“If a man could go, for instance, to 1,000 feet down and do practical work,” Mr. Keller wrote in The Sydney Morning Herald, “then all the continental shelf zone could be explored, a total of more than 16 million square miles.”

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An ambitious quest for underwater exploration that ended in tragedy beneath the Pacific waves.

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Christopher Swann, a diving historian, said the dive “was a milepost in the sense that it was the first time something like that had been done.”

Keller ended up living a rich and long life, dying on December 1, 2022, at at a nursing home in Wallisellen, Switzerland, near his home in Niederglatt. He was 88.