For a horror movie, this film has more plot than one would expect. I was impressed with the effort put in to make the audience care about the main characters. They got a background story, were put in situations that are relatable, overall, the plot was well done.
Now, as for the realistic side of things, a lot of liberty was taken. So much so, that I was a bit confused at some parts. Like, how is a large shark surviving in those caves, what is it eating? How is it moving around in the caves? Are we really supposed to believe they grew up down there and are stuck in various areas?
If you’ve ever been scuba diving, you’ll find a lot of errors in how things are done. Science and biology doesn’t apply in this movie like it does in the rest of the world. There was also a lacking of presence of Mexicans for a movie taking place in Mexico.
So yes, I have a lot of complaints about the movie. But if you are looking for a horror movie, or if you enjoy shark movies, then this is a great movie to see. So weirdly, I do give this a thumbs up. I am torn between saying see it at home or see it in the theaters. At home, you can openly make fun of the twisted logic, but in the movie theater you an enjoy the special effects of the sharks on the big screen. So pick which matters more to you, and do that!