As soon as his face gets splashed over, Stone's hand on his back pushes him back up where he can breathe. "You're okay, I've got you. You can kind of push your stomach up a little and it helps keep you at the surface."

He speaks loud enough to be heard through the water, carefully enunciated (for Raksuran levels of "enunciated"; technically his speech is made up of hisses and growls as much as it is vowel sounds) so as to be understood.