A nameless member

Continuity mistake: Jack and Neytiri successfully save their children and eliminate four soldiers from a group of six. However, during the extraction scene, all six soldiers reappear.

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.