Marine protected areas (MPAs) are sites in the ocean and coastal sea that are dedicated to the conservation of biodiversity, fisheries, ecosystem services and cultural values. MP As range from small, highly protected marine reserves through to large, multiple-use marine parks, such as the Great Barrier Reef Marine Park of Queensland, Australia. This chapter identifies the major policy events and phases of MPA development in Australia, and explores the role and effectiveness of MP As in conserving Australia's marine environment. The governance of Australian MPAs is complex; the responsibility for their declaration and management is shared between the Australian (Commonwealth), State and Territory Governments. Progress in the declaration and management of MP As is not uniform across Australia, with some jurisdictions performing better than others. Australia is considered a world leader in the science and implementation of MPAs. However, there are serious weaknesses in the design of MP As in Commonwealth waters due to the locating of new MPAs where they are least controversial and least costly. Considerable further effort is needed to create an effective national programme for delivering biodiversity conservation in Australia waters. This is particularly important because Australia's oceans face an unprecedented set of pressures from accelerating climate change and coastal development
