Assessing movement patterns of fish communities associated with artificial reef systems is important for examining the degree of connectivity between proximal natural reefs and the degree of site fidelity with the artificial reef system. Higher levels of fidelity with artificial reef systems suggest that artificial reefs provide suitable habitat and thus contribute to the local production of fish, whereas low site fidelity would suggest that these reefs are little more than fish attractants. The Eastern Fiddler Ray (Trygonorrhina fasciata) and the Port Jackson Shark (Heterodontus portusjacksoni) occur along the eastern coast of Australia and are common by-catch species in bottom trawl, gillnet and long-line fisheries. In this study, 9 Eastern Fiddler rays and 17 Port Jackson sharks were surgically implanted with a VEMCO acoustic tag to record the movements, activity, behaviour and residency around an Offshore Artificial Reef (OAR) located 1.5 km off South Head, Sydney Harbour. Connectivity of the OAR with surrounding natural reefs is determined by comparing the OAR data with downloads from 10-15 existing receivers within an established VR2W Positioning System (VPS) acoustic array. During the initial study period from June 2013 to February 2014, T. fasciata was most active and highly resident at the OAR during daylight hours. In contrast, H. portusjacksoni was mostly nocturnal and moved between sites, but was predominantly resident at the OAR. The preliminary results suggest that the OAR supports elasmobranch and other non-recreational species, indicating the potential for production to occur on offshore artificial reefs.