"The Newt Suit, was developed by Canadian engineer Phil Nuytten. The Newt Suit is constructed to function like a 'submarine you can wear', allowing the diver to work at normal atmospheric pressure even at depths of over 300 metres. Made of cast aluminium, it has fully-articulated joints so the diver can move more easily underwater. The life-support system provides 6–8 hours of air, with an emergency back-up supply of an additional 48 hours."