Yet another "people-trapped-underwater-in-a-metal-box" movie. This plot is so used up. The cinematography is bad (too dark), the supporting cast behind Kristen Stewart and Vincent Cassel are not too great and the effects are just average. Aside from about an hour's worth of Kristen in her underwear, there's nothing to see. Watch "Deep Blue Sea" or "Leviathan" instead. Both are much better.