On screen
Cast
45 credited performers
Patrick Duffy
Mark Harris
Belinda Montgomery
Dr. Elizabeth Merrill
Alan Fudge
Dr. Crawford
Robert Lussier
Brent
Artwork unavailable
J. Víctor López
Cetacean crew (as J. Victor Lopez)
Jean Marie Hon
Cetacean crew
Artwork unavailable
Anson Downes
Cetacean crew
Victor Buono
Mr. Schubert
Ted Neeley
Jack Muldoon
Sydney Lassick
Character not listed
Gary Owens
Blaise Mullen
Pernell Roberts
Clint Hollister
René Auberjonois
Havergal
Val Avery
Lew
Pat Morita
Moby
Michael Strong
Hugh Trevanian
Sharon Farrell
Charlene Baker
Carole Mallory
Vicki
Ted Cassidy
Canja
Kareem Abdul-Jabbar
Thark
Harvey Jason
Dashki
Noble Willingham
Artemus Washburn
John Shea
Romeo
Michele Carey
Belle
Neville Brand
Stringer
Billy Barty
Moxie
Lisa Eilbacher
Juliet
Timothy Scott
Caine
Anthony James
Summersday
Artwork unavailable
Scott Porter
Mercutio
Dee Wallace
Hot Dog Stand Owner (as Dee Wallace-Stone)
Artwork unavailable
Victoria Huxtable
Juliette Schubert (as Vicky Huxtable)
Artwork unavailable
J. Víctor López
Cetacean crew (as J. Victor Lopez)
Arlene Martel
Carla(as Tasha Martell)
Jamie Smith-Jackson
Bettina Washburn (as Jamie Smith Jackson)
Ahna Capri
Louisa
Mel Scott
Bert Davis
Lyman Ward
Clavius
Richard Gautier
Duke (as Dick Gautier)
Artwork unavailable
Larry Breeding
Buddy O'Toole
Laurette Spang
Amanda Trevanian
Lisa Blake Richards
Jenny Reynolds (as Lisa Richards)
Artwork unavailable
Carol Miyaoka
Siren
Donna Garrett
Student
Artwork unavailable
Marguerite DeLain
First Receptionist