★ 6.5 1977 Series 13+ 1 Season
Sci-Fi & Fantasy •Drama •Action & Adventure
Atlantis survivor Mark Harris breathes underwater, withstands extreme depth pressures and wields superhuman strength.
Seasons & Episodes
1 SeasonCast
Patrick Duffy
Mark Harris
Belinda Montgomery
Dr. Elizabeth Merrill
Alan Fudge
Dr. Crawford
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