1948 Tarzan and the Mermaids A high priest tries to force a young beauty to marry a pearl trader who is masquerading as the god Balu. Credits Director Robert Florey Producer Sol Lesser Writer Carroll Young Cinematographer Jack Draper Costume Design Norma Koch Composer Dimitri Tiomkin Cast Johnny Weissmüller , Brenda Joyce , Linda Christian , George Zucco , John Laurenz , Andrea Palma , Fernando Wagner , Gustavo Rojo , Edward Ashley , Matthew Boulton Studios RKO Radio Pictures , Sol Lesser Productions Genres Action Adventure External IMDb Amazon Posters 5