The record for regular air is 11min 35sec.
Pretty impressive either way.
This is a video of the end of Mifsud's 11:35 breath hold: https://www.youtube.com/watch?v=MHPGKb7ipgc . The protocol after the hold is that you have to take off your goggles/mask and noseclip, look at the judges and do a clear hand signal that you're ok. Your chin/face should not touch the water before you get a reply from the judges, in the form of a card. It's nothing short of amazing how clearly he follows protocol given that his brain has been oxygen deprived for more than 11 minutes.
Looking back, I’m increasingly glad I became an early adopter - Kagi has proven to be as much of an improvement over Google as Google once was over its older rivals.