Man from Atlantis

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

Gary Owens

Blaise Mullen

1 episode

Pernell Roberts

Clint Hollister

1 episode

René Auberjonois

Havergal

1 episode

Val Avery

Lew

1 episode

Pat Morita

Moby

1 episode

Michael Strong

Hugh Trevanian

1 episode

Sharon Farrell

Charlene Baker

1 episode

Carole Mallory

Vicki

1 episode

Ted Cassidy

Canja

1 episode

Kareem Abdul-Jabbar

Thark

1 episode

Harvey Jason

Dashki

1 episode

Noble Willingham

Artemus Washburn

1 episode

John Shea

Romeo

1 episode

Michele Carey

Belle

1 episode