To some extent, it was based on real incidents. But like many movies, it likely embellished and dramatized certain elements to make it more engaging for the audience.
Yes, it's based on a true story. The story in 'Open Water 2' often makes viewers feel a sense of dread because it's rooted in reality. It depicts how quickly a day of fun on the water can turn into a nightmare. The characters in the movie are in a fight for their lives, much like those in the real - life events that inspired it. This connection to real - life gives the movie an extra layer of authenticity and horror.