Amphibian Man (1961)

Plot

In a coastal village, residents are on edge due to sightings of a mysterious entity dubbed "the sea devil." Unbeknownst to them, the creature is Ichtiander, the son of Dr. Salvator, who underwent a transformative surgery enabling him to thrive underwater. While this unique ability offers Ichtiander some perks, it also leads to significant challenges as he grapples with his dual existence. As the townsfolk become increasingly suspicious, the line between fear and understanding blurs, forcing Ichtiander and his father to confront the consequences of science and the nature of humanity.