In the dark silence of the sea during World War II, the submarine U.S.S. Tiger Shark prowls on what should be a routine rescue mission. But for the shell-shocked crew, trapped together in the sub’s narrow corridors and constricted spaces, this is about to become a journey into the sensory delusions, mental deceptions and runaway fear that lurk just below the surface of the ocean and deep inside the human psyche. —IMDb
David Neil Twohy (born 18 October 1955) is an American film director and screenwriter.
Twohy was born in Los Angeles County, California. He attended college at California State University, Long Beach, graduating with a degree in radio/television/film.
His most successful movies have been: (as a writer) The Fugitive starring Harrison Ford, and (as a writer and director) Pitch Black, The Chronicles of Riddick and its upcoming sequel Riddick 3. He also wrote the script and scenario for the The Chronicles of Riddick: Escape from Butcher Bay video game. He has a cameo in Below as the British Captain of the rescue ship. —Wikipedia
Far from perfect, the movie's strengths lie in it's unique genre manipulation and genuine creepiness at times. The plot is nothing spectacular or too shocking, but the creativeness is still present in most every shot, aside for some unnecessary effects.