"his oxygen was getting dangerously low and surfaced too quickly, instead of to a gradual ascending with regular pauses. "
Pretty much what everyone guessed. Up too fast.
This happens too often for different reasons. Gas goes quicker the deeper you go and many 40' reef divers have never experienced this until they go 120' on a cold dark wreck. Many of those same people have never experienced the massive effect of expanded gas in the BC until then.
It's the little things all at once that kill you. ---- Sneak on on new stuff a inch at a time no matter what dangerous sport you are pursuing.
Pretty much what everyone guessed. Up too fast.
This happens too often for different reasons. Gas goes quicker the deeper you go and many 40' reef divers have never experienced this until they go 120' on a cold dark wreck. Many of those same people have never experienced the massive effect of expanded gas in the BC until then.
It's the little things all at once that kill you. ---- Sneak on on new stuff a inch at a time no matter what dangerous sport you are pursuing.