There&#x27;s an awful lot of stupid behavior death in cave diving as well.<p>A lot of the risks are mitigated by proper gear and training, just like driving.<p>Don&#x27;t dive too deep on air to avoid nitrogen narcosis (similar to don&#x27;t drink and drive).<p>Dive with a buddy.<p>Dive with team and individual redundancy.<p>Do not silt out the cave (the way you kick and your proficiency in the water has a lot to do with this).<p>Always have a continuous guideline to the surface.<p>Reserve at least 1&#x2F;3 of your gas for emergencies.<p>And in practice there&#x27;s other rules -- like you should always sight-see or use cameras&#x2F;videos on the way <i>into</i> the cave.  On the exit you should be more efficient (effectively this usually means you use 1&#x2F;3rd of your gas to enter, and only 1&#x2F;4 of your gas to exit, which means you have a higher buffer should anything go wrong).<p>The redundancy figures quoted are also low.  I&#x27;ve done around 200 cave dives.  I&#x27;ve had one hose blow on me in a cave and therefore lost a regulator.  I can&#x27;t think of any other local divers who have had a similar situation where they&#x27;ve actually needed to exit a cave with a failed regulator.  I would say the failure rate is most likely closer to 1 in 1000.  But even taking 1 in 200 as the failure rate, the chances of three failures are 1 in 8,000,000 and even then you can buddy breathe off of a single remaining regulator and you should still have gas supply to exit (the remaining third is there for that kind of situation).<p>And now I&#x27;m more careful to not only get my regulator serviced but to be more aware of changing out hoses and to do so before cave trips if there&#x27;s signs of wear.<p>Generally with cave fatalities there are blatant issues, such as failure to maintain a continuous guideline leading to navigation errors leading to simply running out of gas because nobody was paying any attention.<p>There&#x27;s only one known cave diving fatality where all the rules were followed and diver still died, which was the cave diving fatality that killed Parker Turner.