They’re not alone.
It’s bad enough being trapped deep under the seas, communication cut off, struggling to stay alive as the weight of water threatens to crush the last breath from your lungs.
Then toss in something impossibly large, which also happens to have a lot of quite nasty teeth, and an insatiable appetite, and things have gone from bad to worse in a hot second.
Every movie like this gets compared to Alien, and almost all come up short of that landmark.
But this twist on an old tale, anchored by a strong Kristen Stewart, is in there fighting.