Hannes Keller was a Swiss physicist, mathematician, deep diving pioneer, and entrepreneur best known for his 1962 deep diving achievement of 1,020 feet (311m) dive off Catalina Island, California. Although two other people died he remained the only person on the planet to have touched the ocean floor until 1975. His accomplishment accelerated a new age of deep sea diving. Keller was born in Winterthur, Switzerland and attended University of Zurich to study philosophy, mathematics, and theoretic... moreHannes Keller was a Swiss physicist, mathematician, deep diving pioneer, and entrepreneur best known for his 1962 deep diving achievement of 1,020 feet (311m) dive off Catalina Island, California. Although two other people died he remained the only person on the planet to have touched the ocean floor until 1975. His accomplishment accelerated a new age of deep sea diving. Keller was born in Winterthur, Switzerland and attended University of Zurich to study philosophy, mathematics, and theoretical physics. His success in diving led him to construct decompression chambers that he sold to hospitals and the Navy. After his diving career he became a successful businessman selling his own line of computers and in the 1980s became a leading vendor of IBM PCs in Switzerland. Keller was a renaissance man. On top of everything mentioned he was also a classical pianist, he ran Visipix, the largest fine art and photo museum online and was on the advisory board for United States Historical Diving Society in 2009.