Underwater - "Take the bunny"
So if you took Alien and set it underwater, and swapped out Sigourney Weaver in her underwear for Kristen Stewart in her underwear (but also wet) you'd basically have this film. ALSO there is a twist ending to this film that will delight nerds everywhere...only we can't tell you what the twist is. But what we can say is trust us - this film is claustrophobic, intense, thrilling, cool, and a scary good time. Give it a watch.