Every year we undertake three or four expeditions to maintain and upgrade the deep sea ocean observing infrastructure that Ocean Networks Canada (ONC) manages on behalf of all Canadians. From 6 August – 2 September, a nine-person ONC team will spend almost four weeks onboard state-of-the-art exploration vessel EV Nautilus, owned and operated by Ocean Exploration Trust. This will be our sixth major expedition in collaboration with this exceptional team.