[fleshy]

Shallow water blackout short and simply is this. Not blacking out from lack of oxygen, blacking out from having to much CO2 in your blood. It happens the most with younger and middle experience ranged divers because they are pusing their limits. Building up more CO2 in their systems than they are used to, and at the same time taking lots of fast repitition dives. Best way to avoid SWB, is to have good breaks between dives.