The Western Australia moorings sub-facility is responsible for a collection of moorings designed to monitor variability in the Leeuwin Current and continental shelf currents both in terms of along-shore and cross-shore variability.  Moorings in the region also monitor processes within the Perth Canyon.  The time-series monitoring of physical and biological parameters provided by these moorings supplements past and current research activities in the region based at the CSIRO, the Department of Fisheries WA and Western Australian Universities.  The sub-facility currently maintains eight regional moorings and three National Reference Stations.

The regional moorings are located off Perth, clustered near the Perth Canyon and the Two Rocks Line.  The Two Rocks Line contains five moorings which transect the continental shelf north of perth from the 50m to the 500m isobath.  Primarily these moorings are thermistor strings allowing the structure of the Leeuwin Current to be determined.  Two of the moorings also sample biogeochemical parameters.  Around the Perth Canyon, two slope moorings located near the 1000m isobath and one shelf mooring in shallower water at the head of the canyon, monitor processes in and around the canyon.  Acoustic noise loggers have also been deployed in the Perth Canyon to provide baseline data on ambient oceanic noise, detection of fish and mammal vocalizations linked to ocean productivity and whale migration patterns and detection of underwater events.

The sub-facility also maintains three National Reference Stations, located at Ningaloo Reef in the north, Rottnest Island near Perth and Esperence in the south.