Blake Lively's performance in 'The Shallows' is very engaging. The movie is basically a one-woman show. Blake gives everything she has to make her fight for survival look realistic and she really does it great. Her performance elevates the movie above the usual mediocrity one is used to seeing in these kinds of survival movies these days. She's not only easy on the eyes in her surfer outfit, but she also acts realistically and makes you feel the character's pain.

I thought it was a pretty decent and relatively realistic shark attack movie – up until the finale that is. Just before the final fight against the shark, there is an under-water scene involving glowing jellyfish, which just seems completely unrealistic and out of place to me. That scene is something for a sci-fi movie. Then there is the final fight in which the shark is killed in the most ridiculous and unrealistic way imaginable. The payoff in this otherwise decent movie is just laughable and something I would have expected seeing in a Sharknado installment or something.

It's too bad that the movie doesn't hold up until the very end, but it is still a rather decent survival movie. Watch it for Blake Lively's great performance, if nothing else.