The Aanderaa Optode 4531A (S/N 206) was deployed on 2020-03-09 at China Creek. China Creek is located in the Alberni Inlet, which is a long, narrow inlet on Vancouver Island. This device is a Oxygen Sensor. Oxygen sensors measure dissolved oxygen concentration in seawater. It was deployed on a fixed platform. Data from this deployment were archived and made available through Ocean Networks Canada's Oceans 3.0 digital infrastructure, with quality assurance and derived data products following established practices.