Through collaborating with commercial diving companies over the years, AUS-ROV has been able to access some intrinsically difficult to reach places. Subsea Global Solutions (formerly Gray Diving Services) are one outfit that have recognised the value in collaboration between diver and remote operated vehicle, in fact the US Navy have in recent years adopted the SRS Fusion being a hybrid ROV/AUV which also can be used as a Diver Navigation & Propulsion System. There remains a robust relationship between man and machine, one prime example is the use of diver and inspection class ROV for conducting internal surveys of tunnels and pipelines with access hatches or grates. Divers can be utilised for means of accessing underwater confined spaces however the hazards once inside pose too high a risk and physical challenge to warrant performing the inspection much beyond this point. This is where the advantages of ROV can be exemplified. In the instance of Cascade Dam, a diver was deployed to unbolt a hatch which then allowed an ROV to enter into a 400mm diameter scour pipeline and conduct internal visual inspection up to the downstream valve at a distance of approximately 220m. Both Diver and ROV have their uses in modern day underwater operations and we will continue to see this symbiotic relationship in years to come.