The Sea Fiend, aka Devil Monster, is an American adventure film directed by S. Edwin Graham and it was shown in Great Britain as The Sea Fiend in 1938. An edited version of the film was released in 1946 as Devil Monster, a low-budget South Seas drama spiced up with stock footage inserts including half-dressed native girls that were also featured in the film's trailer.

Barry Norton
as Robert Jackson

Blanche Mehaffey
as Louise

Jack Barty
as Captain Jackson

Terry Grey
as Tiny, the cook

Jack Del Rio
as Jose Francisco

Mary Carr
as Jose's Mother

William Lemuels
as Native Chief

Maya Owalee
as Maya - Chief's Daughter

Donato Cabrera
as Malo - Chief's Aide