The Shallows is a cool and helpful film, it is also a movie that has many risks of being boring, since much of the film is set on an isolated rock in the sea, and the main one has to survive, not to be killed by A shark, the cast is good, I was surprised Blake Lively's performance, she proved to be a good actress, obviously not a memorable performance, but she did well, the rest of the cast does not compromise, the visual effects are good, the Visual of the shark is OK, the rhythm starts well, but loses a little strength in the progress, the soundtrack combines with the film, the film has tense moments, the script has some problems, and the film unfortunately loses its force in the third act , Plus The Shallows is recommended, even more who likes movies of that same style. Note 6.8