Sharktopus (2010)
A secret U.S. Navy unit known as "Blue Water" creates a hybrid creature by merging a shark and an octopus for military purposes. However, their terrifying experiment goes awry when it breaks free, wreaking havoc along the picturesque shores of Puerto Vallarta. As the monstrous sharktopus begins its reign of terror, the local population must confront this deadly threat that blurs the lines between land and sea. With danger lurking in the waters, survival becomes a race against time.
