Diver Anatoly Beloshchin shot this footage in an underwater cavern at Cenote Angelita, Mexico. The illusion of a river is most commonly attributed to a layer of hydrogen sulfide.
what happens is that in the water, there is another immiscible liquid that is denser, and so its on the bottom. You can get out a glass and pour water and oil in it. It works the same way (except water is on top in the river)
I don't get what I'm supposed to be seeing. The foggy looking stuff on the bottom? Either way, I was totally expecting something dark and sinister to reach up and snatch that diver to his watery death.
As a side note, it's not unheard of for lake bottoms to trap gasses and such that bubble up from below the ground. Rather than bubble its way up to the surface, the gas kept at the bottom through the sheer downward pressure exerted by the water.
Sadly, when that environment is somehow disturbed, the trapped gasses have been known to rush up to the surface in an enormous, invisible cloud of death. Any nearby inhabitants unlucky enough to be at ground level are killed instantly.
The effect is similar to the "choke damp" or "blackdamp" phenomenon experienced by miners, who unknowingly walked into these invisible gas clouds only to die instantly.
Either way, I was totally expecting something dark and sinister to reach up and snatch that diver to his watery death.
Sadly, when that environment is somehow disturbed, the trapped gasses have been known to rush up to the surface in an enormous, invisible cloud of death. Any nearby inhabitants unlucky enough to be at ground level are killed instantly.
The effect is similar to the "choke damp" or "blackdamp" phenomenon experienced by miners, who unknowingly walked into these invisible gas clouds only to die instantly.
I probably sucked the fun out of this video!
hahaha