Saw this film in IMAX, wasnt sure what to expect, it moved from the first 5 minutes and didnt stop moving the entire 2hours 40 minutes. The underlying message about destroying the environment is there but not preached to you. The obvious similarity of the native people and Native Americans is very clear and is a clear reminder how cruel and selfish man can be. Even with these social messages the film was still amazing and greatly entertaining. I would see it a second time just to see the effects.