[JeremyBanks]

The title's a bit misleading, it's not actually water that you'd be breathing.

Water normally doesn't have enough dissolved oxygen

The new suit allows its wearer to breathe a specialized liquid chock-full of oxygen molecules; called a PFC or perfluorocarbon, the liquid can store large amounts of dissolved oxygen.

[die_sekte]

How to breathe water which isn't actually water ... and not die

I imagine this will be an extremely unpleasant experience. Humans don't like having any kind of fluid in their lungs. Safer deep diving is exciting.