Great cinematography! Incredible camera work. I felt like I was in the water and some scenes were unique compared to other movies of same genre. Having said that I gave only 5 stars for a reason. A movie is a story therefore the script and editing is just as important as the camerawork. This story did not unfold easily especially in the first half of movie. For that part I would have given a 2 but the cinematography is a 8 or better.
I'm afraid I was comparing it to 127 hours. That was an amazing script, editing, and acting. In this movie the script and editing were lacking. I am not familiar with the main actor, Alain Hernandez. Maybe he is a good actor but the script writer gave him very little to work with. That is where some great acting and great camerawork can reveal a story better than a script. It did not happen here.
Ultimately I believe the script writer did not capture the real story of survival.