Aliens of the Deep (2005)

Inspired by concepts from the field of astrobiology, James Cameron explores the idea that the bizarre creatures living in the extreme environments found on the ocean floor might provide a blueprint for what life is like elsewhere in the universe. The director is joined in the journey by a team of young marine biologists and NASA researchers who share his interests and excitement as they consider the correlation between life under water and the life we may one day find in outer space.

Official website: http://disney.go.com/disneypictures/aliensofthedeep/