Waterline Close-Up Tank Setup — Titanic BTS 🌊 #shorts #titanic #bts A behind-the-scenes angle showing the floating door scene filmed inside a split water tank. The glass-sided setup allows cameras to capture both above and below the surface in the same frame. Crew members manage lighting, fog, and water temperature while the actors perform inches from the edge. Practical ice pieces float around the tank to enhance realism before the ocean and sky are added in post-production. #TitanicBTS #BehindTheStudio #FloatingDoor #WaterTankShoot #PracticalEffects #FilmSetLife #MovieMaking