All the series on this site are currently featuring photographs from an April 2010 live aboard trip on Australia's Spirit of Freedom. Hundreds of kilometers beyond the Great Barrier Reef, Australia’s Coral Sea harbours the undersea remnants of ancient volcanoes. Here, the diver is presented with sheer walls laced with massive soft corals and gorgonian fans, that plummet 1000 metres to the ocean floor. These isolated reefs, including Osprey and the Ribbon Reefs are renown for their diversity and are the subject of many dramatic underwater photographs.