Oilman Paul Sturges' idyllic family vacation turns into a nightmare when they encounter a ferocious megalodon shark that will stop at nothing to protect its territory. Stranded and under constant attack, Paul and his family must somehow find a way to get his family back to shore alive before it strikes again in this epic battle between humans and nature.
A tropical singles retreat takes a terrifying turn when guests realize a poisonous shark is infesting the surrounding water. Not only will it rip apart its victims, but it also uses projectile acid to hunt - in and out of the water.
Researchers on the undersea lab Aquatica have genetically altered the brains of captive sharks to develop a cure for Alzheimer's disease. But there's an unexpected side effect: the sharks got smarter, faster, and more dangerous. After a big storm damages their remote research facility, they must fight for their lives.