The Shallows

Medical student Nancy (Blake Lively) travels to a warm vacation spot where she can get in plenty of surfing. After calling home to say she's arrived safely, she heads out on her board.

She's suddenly grabbed by a great white shark and pulled underwater. Although she's bleeding from a number of wounds, she manages to get away to safety on a large rock 200 yards from shore. She tries to warn the other surfers that there's a shark, but it's too late. Now all alone, she has to figure out how to get back to land in one piece as the shark circles the rock.