Revenge of the Creature (1955) starring John Agar, Joan Bromfield, Lori Nelson

Revenge of the Creature. Determined men travel back up the Amazon to capture the Creature from the Black Lagoon. Once found the Creature is stunned by dynamite. Then, the gill-man is transported to Marineland (in Florida) for revival, exhibition and study. Strongly objecting to captivity and jabs from an underwater electric cattle prod, he escapes. However, he tracks down and abducts beautiful lady scientist Helen Dobson. Which sets authorities (led by Professor Clete Ferguson) to dog his heels