This nightfury is putting his draconic endurance to good use, effortlessly diving almost 200 feet down and playing around on the bottom for almost 10 minutes now, with no sign of needing to breathe! He eventually rolls onto his back for a while, pawing at his bubbles and looking up at the distant surface that's barely visible, before giving you a puffy-cheeked smile as he notices you. Would you stay with him for a while? He could give you some of his air if you need any.

Screenshotted on "gm_seabase_alpha", edited in GIMP

Giant bubbles alt: https://inkbunny.net/s/3438405-p2