Atlantis survivor Mark Harris breathes underwater, withstands extreme depth pressures and wields superhuman strength.
Patrick Duffy
Mark Harris
13 episodes
Belinda Montgomery
Dr. Elizabeth Merrill
13 episodes
Alan Fudge
Dr. Crawford
13 episodes
Robert Lussier
Brent
13 episodes
J. Víctor López
Cetacean crew (as J. Victor Lopez)
10 episodes
Jean Marie Hon
Cetacean crew
9 episodes
Anson Downes
Cetacean crew
6 episodes
Victor Buono
Mr. Schubert
5 episodes
Ted Neeley
Jack Muldoon
2 episodes
Sydney Lassick
1 episode
