Mark Harris (Patrick Duffy) the name given him has lost his memory. Found washed up on a beach he has gills like a fish and webbed hands and feet. We find he has super-human strength and can withstand deep-water pressures. Doctor Elizabeth Merrill (Belinda Montgomery) "nurses" him back to health and memory returns. He says he is from the Lost Continent of Atlantis!
Last Episode01x13 Deadly Carnival Aired: Jun. 06, 1978
Mark infiltrates an ocean-side carnival – where a government agent was working before he was found mysteriously drowned – and foils a plot …
Series Fun Facts
- Patrick Duffy didn't own a swimsuit when he auditioned for the show; he had to audition in his one unripped pair of Fruit of the Loom briefs.
- The special effects team of Gene Warren created the miniature work used to depict The Cetacean submarine's voyages.
- Patrick Duffy had to shave his body to play Mark Harris. He originally used foam and a razor, saying he "took the longest showers you ever saw," but switched over to an electric shaver during…
[show]Patrick Duffy had to shave his body to play Mark Harris. He originally used foam and a razor, saying he "took the longest showers you ever saw," but switched over to an electric shaver during the show's run.