Sekhmet
First Post
As per Drowning Rules:
If you maintain holding your breath, you suffer no HP damage. you could be at 100% full.
Once you fail the CON check for holding your breath, in that round you're dropped to 0HP and unconscious.
In the next round, you're -1 and dying.
In the third round, you've Drowned, which as I understand it = -10 dead.
A person who has drowned can be resuscitated, assuming they've drowned only recently.
I'd cause the creature to continue making it's "stabilize" checks until they reach -10 to be resuscitated after drowning. If they stabilize within 9 rounds, I'd let them be resuscitated, and if they fail to do so, they would be dead.