Directed by Baltasar Kormákur, the man vs. nature drama is based on a true story of the sole survivor of a fishing boat that sank off the south coast of Iceland in 1984. The man, Gulli, had to swim through freezing waters for five hours and survive a deadly lava field before finally returning to his village.
Kormákur shot the film in the North Atlantic and swam in it many times to get the shots he wanted, while also serving as the de facto stunt coordinator for his actors. He co-wrote the script with Jón Atli Jónasson, based on a play.
Up next for Kormakur is "2 Guns" with Denzel Washington and Mark Wahlberg, whose "Contraband" he also directed. "The Deep" is being remade for American audiences; Kormákur will serve as producer.