It Came from Beneath the Sea is a 1955 American science fiction monster film from Columbia Pictures, produced by Sam Katzman and Charles Schneer, directed by Robert Gordon, that stars Kenneth Tobey, Faith Domergue, and Donald Curtis. The screenplay by George Worthing Yates was designed to showcase the stop motion animation special effects of Ray Harryhausen. A monstrous giant octopus rampages along the west coast of North America after becoming too radioactive from nuclear testing in the South Pacific for it to be able to hunt its natural prey in the Mindanao Deep. It Came from Beneath the Sea was released as the top half of a double feature with Creature with the Atom Brain. Plot A nuclear submarine on its shakedown cruise in the Pacific Ocean, captained by Commander Pete Mathews, comes into contact with a massive sonar return. Unable to outrun and outmaneuver the object, the boat is disabled, but frees itself and returns to Pearl Harbor. Tissue from a huge sea creature is discovered jammed in the submarine's dive planes. A team of marine biologists, Professor Lesley Joyce and John Carter of Harvard University, is called in; they identify the tissue as being a small part of a gigantic octopus. The military authorities are unconvinced, but are finally persuaded after receiving reports of missing swimmers and ships at sea being pulled under by a large sea creature. Both scientists conclude that the animal is from the Mindanao Deep, having been forced from its natural habitat by hydrogen bomb testing in the area, which has made the giant octopus radioactive, driving off its natural food supply. The scientists suggest the disappearances of a Japanese fishing fleet and a Siberian seal boat may be the work of the foraging giant. Both Mathews and the Navy representatives express doubt and demand further proof. Later, as Mathews assists Joyce and Carter, a report comes in of an attack on a Canadian freighter; several men escaped in a life raft. The survivors are questioned by psychiatrists, but when the first sailor's description of a creature with giant tentacles is doubted, the other sailors refuse to testify. Joyce is able to convince the first sailor to repeat his story. The U.S. government officials halt all sea traffic in the North Pacific without revealing the reason. Carter flies out to sea to trace a missing ship, while Mathews and Joyce follow up on a