Scattered over the Queensland Plateau within the Coral Sea are large coral atolls which have kept pace with platform subsidence and have continued growing up to present day sea-levels. Osprey Reef is one such atoll and the steep walls of this oceanic reef drop more than one km into the Queensland Trough which separates the Australian mainland from the plateau. The Deep Osprey Reef mapping project is a collaboration between James Cook University and the adventure scuba diving vessel MV Undersea Explorer, to map the deep seabed of the remote Osprey Reef. These images show some results from the project and the underwater marine life of this spectacular coral atoll.