Enjoyable hokum with a terrifying radiation powered and enlarged octopus terrifying US nuclear submarines and the Californian Bay Area. While the special effects aren’t entirely cringeworthy, they do lead to some unintentionally funny moments, as tentacles flail all over the place. Just as false are the occasional nods towards gender equality, with Faith Domergue’s character showing great pluck, but then falling for the brutish navy man and screaming at the octopus. Perfectly good fun, but by no means a classic.