CincyBengalsFan once bubbled...
Commercial Divers routinely every day on this planet go thru chamber runs of 100% O2 at 2.25 And actually go up to 2.82 and are still OK. These guys are motionless in the chamber though.
Right, they are motionless. And something I've learned not long ago, they are given meds for better O2 tolerance.
And like Rick said "Note that in a chamber where higher PO2's are routinely used, an occasional O2 hit is no big deal, but underwater it is almost always fatal"
Anyone here that had experienced convulsions underwater?