1977 Man From Atlantis starring Patrick Duffy

Man from Atlantis TV Series 1977–1978 TV-PG
The adventures of an amphibious man, the last survivor of the legendary sunken city.
Creators: Mayo Simon, Herbert F. Solow
Stars: Patrick Duffy, Alan Fudge, Belinda Montgomery
S00.E1 Made for TV Movie Premiere Man from Atlantis
Episode aired Mar 4, 1977 TV-PG
Man from Atlantis (1977)
A water-breathing human, the sole survivor of an underwater civilization called Atlantis, emerges from the ocean and has to learn to deal with the air-breathers on the surface.
Director: Lee H. Katzin
Writer: Mayo Simon
Stars: Patrick Duffy, Belinda Montgomery, Dean Santoro