Pretty cool. Reminds me of diving the springs here in FL.
That is cool. Wonder why the water is so clear? It must have been very recent since none of the above-water plants are dead yet.
Looks like a cool dive. The water must be freezing if they are having to use dry suits though.
It's in the Austrian Alps. Pretty sure the water is from the mountains.
I visited a place like this a few years ago in Switzerland in the middle of summer and the water was icy cold. 
Beautiful!
TrulyCdn