All on one breath!
 

thats a freaky hole!! I'd be worried about becoming a snack!!!

That's awesome, love to do that But at the same time with no tanks scary:scared:

WOWZA. 202m. I'd have a hard time descending into that black hole even with a tank on my back. I remember swimming in the cenotes near Cancun and looking down and seeing it descend into inky blackness and it was the creepiest feeling ever. I remember thinking "Man, I'm so glad I don't have my car keys in my pocket because I'm sure to have dropped them down there and I'll be screwed." Although I guess in hindsight all I would have needed to do was ask Guillaume Nery to see if he could find them please and thank you and beer's on me if you find them.

Can you imagine how bad the pressure is going to be crushing your head and sinuses as you descend ?? And the lactic acid buildup in your muscles and the extreme urge to gasp as the CO2 builds up in your bloodstream? It must take an insane amount of dedicated discipline. Wow wow wow is all I can say.