The adventures of a man with amphibious abilities.
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1978   1977  


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Complete series cast summary:
Patrick Duffy ...  Mark Harris 17 episodes, 1977-1978
Alan Fudge ...  C.W. Crawford 16 episodes, 1977-1978
Belinda Montgomery ...  Dr. Elizabeth Merrill 15 episodes, 1977-1978
Anson Downes ...  Airlock Officer 15 episodes, 1977-1978
Jean Marie Hon Jean Marie Hon ...  Jane 9 episodes, 1977-1978


Mark Harris is the lone survivor of the legendary sunken continent of Atlantis. Having adapted to life underwater, Mark possesses webbed hands, light-sensitive eyes, and the ability to swim at low depths in the sea for long periods. He draws strength from water and can overpower most ordinary men. Mark assists an institute for undersea research operated by his human friends, Dr. Elizabeth Merrill and C.W. Crawford, and joins Dr. Merrill in several exploratory missions aboard a high-tech submarine. They encounter several bizarre phenomena, including portals leading to other dimensions, a substance capable of altering personalities, an impish creature whose touch causes a mental return to childhood, and the scheme of a portly millionaire, Mr. Schubert, to melt the polar icecaps. Written by Kevin McCorry <>

Plot Summary | Add Synopsis


Beneath the sea... fantastic worlds... bizarre adventures! See more »


Adventure | Sci-Fi







Release Date:

4 March 1977 (USA) See more »

Also Known As:

Der Mann aus Atlantis See more »

Company Credits

Production Co:

Solow Production Company See more »
Show more on IMDbPro »

Technical Specs


(17 episodes)

Sound Mix:




Aspect Ratio:

1.33 : 1
See full technical specs »

Did You Know?


Patrick Duffy would inhale water into his nose and mouth while underwater to prevent air bubbles from escaping while he swam or "talked." See more »


Support wires are visible above the submarine Cetacean depending on the angle of view. Also, when the sub surfaces or submerges in the ship's home base, rising bubbles and surface waves reveal the actual size of the supposedly huge vessel. See more »


Referenced in Watchman Video Broadcast: The Comic Con: Part 2 (2013) See more »

Frequently Asked Questions

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User Reviews

Oy, what a mess!
3 May 2003 | by TVholicSee all my reviews

This never should have been made into a series. Except for very early shows like "Sea Hunt" and "Flipper," nearly all undersea series sooner or later fall into the same trap. With some wonder but little drama beneath the waves, plots turn to alien invaders, time travel, dinosaurs, robots, mind control, evil twins/imposters, the supernatural and other claptrap. "Voyage to the Bottom of the Sea" was the first and most egregious example of this. After the first season's cloak and dagger plots were exhausted, Voyage became the rubber-suited monster of the week show. More recently, SeaQuest 2032 (née DSV) struggled mightily to stick with science, but eventually brought in a battleship-sized alligator, time travel to the Cuban missile crisis, even a ghost story, although it never sunk to VTTBOTS depths with leprechauns, the ghost of Blackbeard, lobster men, plant men, the abominable snowman and a werewolf. But none seemed to go straight to the schlock as this series did. According to this show, the sea floor is strewn with time and dimensional portals. Through them, water-breathing Mark Harris could venture to an arid desert region to face off against Kareem Abdul-Jabbar, to ancient Verona to actually meet Romeo and Juliet, and to the Old West, where he found the lost twin he never knew he had. All the while, it used and reused stock effects footage of the submarine from the first movie.

This was reportedly the first American show broadcast in the People's Republic of China. I wouldn't wish this on our worst enemies. Still, Patrick Duffy did like to say at the time that he was a bigger star in China than here in the US.

The WBshop has now released all of the TV movies and the complete series on DVD. One can clearly see how the quality plummeted through the second through fourth movies before bottoming out in the series.

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