Trivia: This was filmed back to back with the as-yet-untitled Avatar 3. But filming didn't start until the scripts were written for 2 further sequels, so the actors would know the paths that their characters were on. James Cameron allocated the scripts to different writers after months of meetings and storyboarding. He didn't tell the writers which script they'd be working on until the end, because he knew "they'd tune out every time we were talking about the other movie."
Trivia: Kate Winslet performed all her underwater stunts herself, in the process holding her breath underwater for 7 minutes and 15 seconds, breaking Tom Cruise's record, set while filming Mission: Impossible - Rogue Nation.
Trivia: There are scenes in this movie that are reminiscent of well-known scenes from other James Cameron movies. When Spider is in captivity, he bangs a chair into a 2 way mirror, such as in True Lies. When Jake and Neytiri are trapped in an oxygen bubble, they need to try to hold their breath to escape, similar to The Abyss. Other scenes when the whale hunting ship is sinking are reminiscent of Titanic, such as being handcuffed to the ship while it is sinking.
