The U.S. Navy's special group "Blue Water" builds a half-shark, half-octopus for combat. But the sharktopus escapes and terrorizes the beaches of Puerto Vallarta. Eric Roberts, Kerem Bürsin, Sara Malakul Lane, Liv Boughn, Héctor Jiménez, Ralph Garman, Shandi Finnessey Added on Amazon Prime 2022-12-01. Youtube Trailer