Patrick Duffy
Mark Harris (13 eps)
Belinda Montgomery
Dr. Elizabeth Merrill (13 eps)
Alan Fudge
Dr. Crawford (13 eps)
Robert Lussier
Brent (13 eps)
J. Víctor López
Cetacean crew (as J. Victor Lopez) (10 eps)
Jean Marie Hon
Cetacean crew (9 eps)
Anson Downes
Cetacean crew (6 eps)
Victor Buono
Mr. Schubert (5 eps)
Ted Neeley
Jack Muldoon (2 eps)
Gary Owens
Blaise Mullen (1 eps)
Pernell Roberts
Clint Hollister (1 eps)
René Auberjonois
Havergal (1 eps)
Val Avery
Lew (1 eps)
Pat Morita
Moby (1 eps)
Michael Strong
Hugh Trevanian (1 eps)
Sharon Farrell
Charlene Baker (1 eps)
Carole Mallory
Vicki (1 eps)
Ted Cassidy
Canja (1 eps)
Kareem Abdul-Jabbar
Thark (1 eps)
Harvey Jason
Dashki (1 eps)
Noble Willingham
Artemus Washburn (1 eps)
John Shea
Romeo (1 eps)
Michele Carey
Belle (1 eps)
Neville Brand
Stringer (1 eps)
Billy Barty
Moxie (1 eps)
Lisa Eilbacher
Juliet (1 eps)
Timothy Scott
Caine (1 eps)
Anthony James
Summersday (1 eps)
Scott Porter
Mercutio (1 eps)
Dee Wallace
Hot Dog Stand Owner (as Dee Wallace-Stone) (1 eps)
Victoria Huxtable
Juliette Schubert (as Vicky Huxtable) (1 eps)
J. Víctor López
Cetacean crew (as J. Victor Lopez) (1 eps)
Arlene Martel
Carla(as Tasha Martell) (1 eps)
Jamie Smith-Jackson
Bettina Washburn (as Jamie Smith Jackson) (1 eps)
Ahna Capri
Louisa (1 eps)
Mel Scott
Bert Davis (1 eps)
Lyman Ward
Clavius (1 eps)
Richard Gautier
Duke (as Dick Gautier) (1 eps)
Larry Breeding
Buddy O'Toole (1 eps)
Laurette Spang
Amanda Trevanian (1 eps)
Lisa Blake Richards
Jenny Reynolds (as Lisa Richards) (1 eps)
Carol Miyaoka
Siren (1 eps)
Donna Garrett
Student (1 eps)
