Six years ago we told you about the Australian-designed Scorkl, a mini compressed air tank that allows users to breathe underwater for up to 10 minutes. For easier on-the-spot refills, the 2.0 version ...

The Airbuddy, invented by Sydneysider Jan Kaldac, is a battery powered portable compressor that floats on water and follows you as you swim. (9NEWS) The compressor and hose will allow you to dive to a ...