Underwater has hints of the Abyss, Aliens and Sphere when it keeps whats lurking in the water at a distance and has this cerebral feel to the story while Kristen Stewart, Vincent Cassel and even TJ Miller excel in this survival situation they're in as they are dealing with the elements and scenarios they encounter(air supply, broken machinery etc) but when what is in the water is revealed, it quickly becomes reminiscent of the Meg and not in the best way. Kristen Stewart is good here but she can't save this predictable creature feature that doesn't ever feel terrifying or memorable especially when all is revealed.
3/10