Things wrong with this movie:
1. This scenario would never happen in real life.
2. Demonizing sharks gives people a false sense of fear. (Sharks don't view humans as a food source)
3. The whole idea of a shark horror movie has been done countless times, and I'm sick of it. Make something original for once!
4. The two sisters survive WAY longer than they should, considering how much oxygen they use up by screaming. (Literally the dumbest thing you can do)
In conclusion, I feel embarrassed that this movie is a product of America. This is the best that Hollywood can do?!?