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 would inhale water into his nose and mouth while underwater to prevent air bubbles from escaping while he swam or "talked."
- The special effects team of Gene Warren created the miniature work used to depict The Cetacean submarine's voyages.
- Patrick Duffy had to wear custom-molded hard contact lenses to give the luminescent eye effect when Mark Harris was without sunglasses. Victor Buono complimented Duffy on his tolerance for…
[show]Patrick Duffy had to wear custom-molded hard contact lenses to give the luminescent eye effect when Mark Harris was without sunglasses. Victor Buono complimented Duffy on his tolerance for the lenses, saying it was "like trying to act with golf balls stuck in your head."