“Do I really want to watch one girl struggle to get a rock off another for an hour, thirty minutes?” Was the question I asked myself before hitting the play button. But then, I was kinda intrigued by its premise - a deep-sea survival thriller with only a few characters and minimal dialogue and I badly wanted to see how well the director could work with it. Survival films, when done right, can be intense, claustrophobic and emotionally raw no matter how minimal it seems. Well, after my decision to give it a go, I hoped I was going to be gripped.