4 ms·It's filmed upside down.by dvh 5y agoIt's filmed upside down.hollerith 5y agoOh, OK: divers can adjust their buoyancy. Make it high enough and the buoyancy will press you against the ceiling sort of like a negative gravity.code_duck 5y agoThere also the possibility the video was flipped later.hollerith 5y agoWhere it says "filmed upside down", pretend it says, "shows the bottom of the scene at the top of the screen".code_duck 5y agoWhy not just say the video is displayed upside down?hollerith 5y agoYes, that is better.