Nothing to bite you in any underwater caves I've been in.

When you train to be a cave diver, you learn how to get out of the cave with a blind fold on, in the dark, with only the line out in your hand. We also practice finding that line as if we lost it. Until you can do these skills, you don't get certified.

Cave diver here. If the partial pressure of the O2 in your mix exceeds certain thresholds, then the air in your tank can become toxic. This can happen in open water diving with similar consequences. If you are breathing enhanced air like Nitrox at 32%, toxicity can begin to occur at shallower depth

Because we know how to dance for the short time we are here!

Fellow cave divers here. Is this near Marianna? PS, we should start a cave diving community on blue sky. There are several of us on here. A little teaser pix from my favorite cave diving spot at Nahoch Na Chich in the Yucatan.

Carl, another ex-x'er following you here!

#addocean

Beautiful painting.