She taught Mike Nelson how to dive.
Better, she taught Lloyd Bridges. And more.
http://en.m.wikipedia.org/wiki/Zale_Parry
"In 1953 she became a tester of underwater equipment for Scientific Underwater Research Enterprises. Later, she and her partner, (Parry Bivens, an aeronautical and aquatic engineer) designed, built, and marketed the first civilian
hyperbaric chamber for divers. They were evangelists for the purchase of hyperbaric chambers around the world to provide lifesaving facilities for divers suffering from "
the bends".
In 1954, Parry set a women's depth record to 209 feet. She is said to have stopped at 209 feet when she reached the bottom. That year, she became the third female instructor to graduate from the L.A. County UICC program...
Parry's beauty and her knowledge of the sea and diving made her a natural to join the
Sea Hunt show. She was cast without a single screen test. Her role in the series was primarily as a female underwater
stunt double, but she did appear as an actress in a few episodes. She also assisted in teaching Mr. Bridges how to use scuba gear prior to the series going into production."