"While surfing, Nancy (Blake Lively) finds herself on the feeding ground of a great white shark. Survival becomes the ultimate test of wills."
The Shallows is one of the best killer shark movies we've ever seen. That may not sound like high praise, because most killer shark movies aren't very good to begin with, but this movie can be safely mentioned in the same breath as Jaws and Open Water when the best of them is discussed, and that's saying something.
Now that it's on VOD, you should really give it a go if you didn't catch it in theaters.