Really, really enjoyed this movie. For the most part I was willing to completly suspend my disbelief but the ending kind of ruined it. After Nicole Kidman leaves Zane in the inflatable boat and rescues Sam Neill and they embrace I thought that was it and thought that it was a great way to end the movie. And then we get the shot of them finding the inflatable empty and I thought to myself : yes! This is even better, we will never know if he drowned or if someone rescued him and it was quite ominous. That was literally THE perfect way to end it. But then the real ending does happen and whilst Zane getting shot with a flare is cool, the ending is tacked on and dumb. What annoyed me even more is going on IMDB and finding out that the ambigious ending was the original choice but test audiences wanted a conclusion... This is one of the times I just can't comprehend the stupidity of general audiences, everything has to be served to people in a way that doesn't require them to think too much and it's a damn shame because the original ending would've made the movie that much better. Still, a very atmospheric thriller that I'm happy I watched, I guess it's about the journey and not the destination.