Director James Cameron follows marine biologists and other scientists on an undersea expedition in extremely deep waters around the Mid-Ocean Ridge, a submerged mountain range that winds 46,000 miles around the globe. There, in total darkness they find vents on the ocean floor that spew clouds of super-heated water and abundant life -- huge worms, albino crustaceans, and large numbers of blind shrimp. Presented in IMAX 3D, the documentary speculates that life on other planets may resemble these strange creatures. Directed by Cameron & Steven Quale. [0:47]

SEX/NUDITY 1 - A woman wears a short and low-cut top that reveals cleavage and bare abdomen, while dancing with a large crowd around her. A man is bare-chested in a swimsuit.

VIOLENCE/GORE 1 - In a startling jump scene, a large squid-looking creature swims close to the camera and very fast, and in 3D seems to be swimming straight for the audience. A sub gets too close to a very hot water plume and the people inside talk about the water being so hot that it could melt the glass of the sub. A moon of Jupiter has violent volcanic eruptions. A boy eats a messy hamburger (we see goo on his face).

LANGUAGE 0 - None.

DISCUSSION TOPICS - Natural phenomena, marine biology, exploring the unknown, mystery, extraterrestrials, astrobiology, life on other worlds, chemosynthesis, symbiosis.

MESSAGE - Life on other planets may resemble terrestrial deep-sea creatures, and life can thrive almost anywhere. Science is fun and scientific exploration is like a muscle: you have to exercise it to keep it strong.