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 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 Posters 5 US theatrical US international US character US teaser US imax