Keith Larsen and Jeremy Slate starred for the first half season of "The Aquanauts" (1960-1961) as skin divers. Larsen got an ear infection and couldn't continue skin diving, so he was replaced with newcomer Ron Ely. The show's name was changed from "The Aquanauts" to "Malibu Run" shortly after Ely came aboard. I enjoyed the show more when Ron Ely joined the cast. The show had less of a documentary feel to it in the second half and more of a focus on the characters.
Jeremy Slate played Larry Lahr and Ron Ely played Mike Madison. They owned a store called "The Aquanauts" that sold skin diving equipment. Larry and Mike lived in separate suites at the posh "Holiday House" in Malibu. Their suites were very cool bachelor pads. There were plenty of beautiful women around. Larry and Mike took on free-lance skin diving assignments. Larry Lahr and Mike Madison lived lives of glamour and adventure.
Guest stars on "Malibu Run" included Peter Falk, Inger Stevens, William Conrad, Dyan Cannon, Mary Tyler Moore, Carroll O'Connor, Burt Reynolds, Anne Helm, Robert Vaughn, and Scott Marlowe. All pretty early in their careers.
"The Aquanauts" was on Wednesday nights at 7:30 opposite "Wagon Train" and "Hong Kong". "Wagon Train" won the race easily, but to me "The Aquanauts" and "Hong Kong" were far more appealing. I loved both shows and used to switch back and forth from one show to the other. This was before the days of VCR.
Jeremy Slate went on to do some brilliant guest star roles on Gunsmoke, Route 66, Empire, The Defenders, and other shows. Ron Ely went on to star in Tarzan and a remake of Sea Hunt. They were always favorites of mine.