Titanic BTS: How the Underwater Scenes Were Really Filmed! Dive behind the scenes of Titanic and discover the incredible process behind the film’s underwater sequences. This rare BTS footage reveals how stunt performers, divers, and camera operators worked inside massive dive tanks built specially for the movie. Rusted ship corridors, floating debris, and submerged set pieces were recreated underwater to match the real Titanic wreck. Actors practiced slow-motion movements, breath control, and sa