Beneath - Clip No.1A bit of advice: If you're on a boat and you see something really big and scary swimming beneath you, you might want to warn your friends. You know, the ones frolicking fancy-free in the water nearby, completely unaware that something is swimming their way.

Or, you could just stare, dumbfounded, into the water and watch as the giant whatever-it-is swims closer to your soon-to-be-former buds. After all, no one tends to think clearly when they're in a state of shock.

Watch this exclusive clip from the upcoming horror-thriller "Beneath" to see what happens.

"Beneath" hits select theaters and video-on-demand July 16.