Actually! This was a very clever setup by a team of divers in the Arctic, I believe. The person is upside down, their bouyancy belt calibrated just so that they are slightly lighter than water, and able to walk upside down on the ice. In the first segment, when his mask vents, watch the bubbles flow DOWNWARD, which is really the up that we know. Science is really fricking cool!
I LOVE YOU MAKEITEARLGRAY
I was wondering WTF kind of weirdness was happening that was making air heavier than water.
When the Chernobyl disaster occurred in 1986, 3 men dove into contaminated waters to prevent a massive explosion that could have spewed radioactive materials across parts of Europe, saving countless lives. When they resurfaced, they were already suffering from radiation sickness and died soon after. Source
Sometimes I think about all the unknown heroes who endangered their careers and lives to save lives around the world in the Cold War years when the US and USSR were staring each other down.
We told ourselves they were monsters, but whatever you thought of the governments involved, the people were just people.