Acoustic monitoring is a powerful tool for observing tagged marine animals with networks or cross shelf arrays (curtains) of receivers, allowing animals to be monitored over scales of 100s of metres to 100s of kilometres. An array or network consists of a series of Acoustic Receivers that can be left on the sea floor for up to 7 years with the ability to upload data as often as needed. NCRIS and partner investments will target areas identified by regional nodes such as areas under the influence of the East Australia Current; the Ningaloo Reef and upwelling systems off South Australia .