Australia to spend $1.1 billion on Anduril undersea drone fleet ReutersPlans for $1.7 billion underwater ‘Ghost Shark’ drone fleet unveiled Australian Broadcasting CorporationAustralia is spending $1.7bn on a fleet of Ghost Shark submarines. What are they? The Guardian‘Ghost Sharks’ and a historic defence treaty to China-proof our nearest neighbour The Sydney Morning HeraldThe unmanned ‘ghost shark’ robot subs that will boost our defences The Australian