The Sea Serpent
A serpent, created by radioactivity, threatens a Spanish coastal town.
Timothy Bottoms
Pedro Fontán
Taryn Power
Margaret
Jared Martin
First Mate Lemaris
Ray Milland
Professor Timothy Wallace
Gérard Tichy
Carole James
Jill
Jack Taylor
Hospital Killer
León Klimovsky
Dr. Moore
Charly Bravo
Víctor Israel
Porto, Night Watchman
Pilar Alcón
Nurse (as Diana Eagle)
José Canalejas
Eduardo Bea
Teresa del Olmo
Alicia González
José Yepes
Jorge Bosso
Beatriz Savón
José Bastida
Barta Barri
Defensor
Paco Catalá
Fabián Conde
Alfonso de la Vega
Alfredo Enríquez
José Ramón Pardo
Luís Zagalo
Crew
Amando de Ossorio
Director
José Frade
Producer
Manel Santisteban
Original Music Composer
José Antonio Rojo
Editor
Amando de Ossorio
Screenplay
Raúl Pérez Cubero
Director of Photography
Joseph Cherry
Sound Recordist
Fernando Florido
Makeup Artist
Antonio Sáiz Palazón
Camera Operator
José Luis Galicia
Art Direction
Dolores García Rey
Hairstylist
Thomas Urbant
Special Effects
Joseph Vargas
Special Effects
Frank Cuttlet
Special Effects
Vincent D. White
Construction Coordinator
Alex Digest
Still Photographer
Salvador Gómez Calle
Assistant Camera
Erika Szel
Script Supervisor