Relativity Media has revealed the trailer for Shark Night 3D, directed by David R. Ellis and starring Sara Paxton, Dustin Milligan, Katharine McPhee, Chris Carmack, Alyssa Diaz, Joel David Moore, Donal Logue, Sinqua Walls and Chris Zylka.

In the horror thriller opening September 2nd, a sexy summer weekend turns into a blood-soaked nightmare for a group of college students trapped on an island surrounded by voracious underwater predators. Arriving by boat at her family's Louisiana lake island cabin, Sara (Paxton) and her friends quickly strip down to their swimsuits for a weekend of fun in the sun. But when star football player Malik (Walls) stumbles from the salt-water lake with his arm torn off, the party mood quickly evaporates. Assuming the injury was caused by a freak wake-boarding accident, the group realizes they have to get Malik to a hospital on the other side of the lake, and fast. But as they set out in a tiny speedboat, the college friends discover the lake has been stocked with hundreds of massive, flesh-eating sharks! As they face one grisly death after another, Sara and the others struggle desperately to fend off the sharks, get help and stay alive long enough to reach the safety of dry land.