The idea for this movie is great, taking a classic space sci-fi plot and setting it in an equally hostile environment: deep underwater. The characters, however, are not likable enough to rival this movie’s predecessors and not memorable enough to make a lasting impression. It does a good job with the ambiance, competently building claustrophobic tension from the heroes’ perspective. It’s a fun thriller with some good reveals; nothing more, but nothing less.

Closest comparison: It’s like Alien (1979) by way of U-571.

Setting: Sci-Fi
Plot: Disaster
Tone: Thriller