Just in time for Summer, Blake Lively is making us terrified to go back in the water. The latest trailer for her shark thriller, The Shallows, shows a whole lot more of the hungry Great White than the initial teaser trailer did, but it's just as unbelivably tense. Lively's character is stranded on a rock after getting bitten on the leg while surfing a few yards off the shore of an isolated beach, and as the tide rises, she's circled by the menacing, massive shark. Let's just say that the sound of her ragged screams will haunt you for days. Watch the new trailer above (if you don't have any tropical vacations planned, that is) before it swims into theaters on June 24, and then check out some significantly less horrifying shots of her on set!