Creature of the Black Lagoon, 1954

Creature from the Black Lagoon is a 1954 American black-and-white 3D monster horror film from Universal-International, produced by William Alland, directed by Jack Arnold, and starring Richard Carlson, Julie Adams, Richard Denning, Antonio Moreno, Nestor Paiva, and Whit Bissell.

Plot
A geology expedition in the Amazon uncovers fossilized evidence (a skeletal hand with webbed fingers) from the Devonian period that provides a direct link between land and sea animals. Expedition leader Dr. Carl Maia (Antonio Moreno) orders his two assistants to stay in camp while he visits his friend and former student, ichthyologist Dr. David Reed (Richard Carlson).

Soon after Dr. Maia leaves camp, a piscine amphibious humanoid, a living member of the same species from which the fossil originated, becomes curious about the expedition's camp. When its sudden appearance frightens the assistants, they panic and attack, and in response the enraged creature kills them both.