Read more about Giant Octopus (It Came from Beneath the Sea) at: Wikipedia

Official Site: Columbia Pictures/Sony

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.

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.

Giant Octopus (It Came from Beneath the Sea) has not been a contender in any CBUB matches.