This is an underwater river in Mexico.

[Rapunzel]

The river is made of hydrogen sulfide. As hydrogen sulfide is much denser than water, it stays at the bottom and creates its own river. However, hydrogen sulfide is classified as a level 4 in the MSDS, and is very dangerous. Definitely not something you want to go take a dip in.

 

[Jazzy]

It's eerie but beautiful at the same time. I'm a diver but I would never go in there like the diver did in the pictures.

 

[Evil Eye]

Cool, sub rivers!

 

[DrLeftover]

This is the rest of the text from the page.

If you are a professional diver you should visit Cenote Angelita Mexico.



These amazing pictures were taken by Anatoly Beloshchin in the cave Cenote Angelita, Mexico. Here’s his description: “We are 30 meters deep, fresh water, then 60 meters deep – salty water and under me I see a river, island and fallen leaves… Actually, the river, which you can see, is a layer of hydrogen sulphide.”

It must be an unforgettable feeling once you’re there and see it with your own eyes.

http://thefortuno.com/underwater-river-in-mexico/

 

[Rapunzel]

It's eerie but beautiful at the same time. I'm a diver but I would never go in there like the diver did in the pictures.

I agree, it's creepy! I also agree about not diving so close if it's that dangerous. There must surely be an area where the hydrogen sulfide mixes with the normal water. I wouldn't like to swim in that section either!



I would guess he's collecting some of the lower river to experiment on & to see what other chemicals it contains. Still, it's interesting to find you can have a river beneath a river and it makes you wonder what else our world contains that we don't know about yet.

 

[DrLeftover]

Well.... there is another river under an ocean in the Black Sea that was found last year.

A 3-D radar image, using false colour, of the undersea river channel where it enters the Black Sea from the Bosphorus Strait. Photo: University of Leeds



http://www.telegraph.co.uk/earth/en...rsea-river-discovered-flowing-on-sea-bed.html





It is amazing what this world contains.