Coasts and oceans

Marine Bioregional Planning

Protected places in the South-west Marine Region

Within the South-west Marine Region there is currently one Commonwealth marine reserve - the Great Australian Bight Marine Park - and five shipwrecks protected under the Historic Shipwrecks Act 1976.

The Great Australian Bight Marine Park

The Great Australian Bight Marine Park (Commonwealth waters), declared in 1998, is currently the only MPA within the Region. At around 19 700 km2, the park is one of the Australian Government's largest MPAs. The park, including its South Australia State waters components, stretches from 200 km west of Ceduna in South Australia along the coast to the Western Australian border. The park is managed cooperatively by the Australian Government and the South Australian Government. It was also the first MPA to include an area especially designed to be representative of the Region.

The combined Commonwealth and State waters of the Park are split into four management zones. Within South Australian waters there are Sanctuary and Conservation Zones, and in Commonwealth waters there is a Marine Mammal Protection Zone and a Benthic Protection Zone. These zones are designed to protect the particular conservation values of the Park which are:

Several unique factors combine to contribute to the high level of biodiversity and endemism in the area of the Park. These include a long period of geological isolation, a persistent high wind and wave energy environment, warm-water intrusion via the Leeuwin current from Western Australia, and cold-water, nutrient-rich upwellings in the east. Taxonomic groups with exceptional diversity in this area include red algae (sea weed), ascidians (sea squirts), bryozoans (lace corals), molluscs (shellfish) and echinoderms (sea urchins and sea stars).

The EPBC Act (s.354) prohibits actions affecting native species inside the park unless authorised under the Great Australian Bight Marine Park (Commonwealth waters) Management Plan 2005-2012. The plan currently allows a range of activities, including fishing and scientific research, to be carried out under permit from the Director of National Parks. Other provisions of the Act prevent activities that affect species of particular conservation interest (in the park or other Commonwealth waters), and control actions that could have a 'significant' impact on the Commonwealth marine environment, including the park's seabed. The park's management plan supplements this protection by minimising disturbances to areas of habitat important to these species, and prohibiting disturbances to the seabed by benthic trawling, while allowing for other ecologically sustainable activities in the park.

Further information on the Great Australian Bight Marine Park

Historic shipwrecks

Within the South-west Marine Region there are currently five known historic shipwrecks protected under the Historic Shipwrecks Act 1976 [note however that many more shipwrecks are located in State waters]. These are the:

Following were found in March 2008

For approximate locations of these shipwrecks please download the map below:

The HMAS Sydney II and German raider HSK Kormoran were found in March 2008, some 66 years after they were lost. The Minister for the Environment, Heritage and the Arts has placed a provisional declaration over the HMAS Sydney II and German raider HSK Kormoran under the Historic Shipwrecks Act 1976. The declaration gives legal protection to these historically significant vessels and relics, from damage, disturbance or removal. Under the provisional declaration, unauthorised damage, disturbance or removal of the sites is prohibited. This action will ensure respect for all those that died in the battle but will not prevent further documentation of the site.

It should also be noted that information about the location of shipwrecks is often approximate and that other historic shipwrecks may be located within the Region.

Further information about Historic Shipwrecks and the Act

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A diver explores the wreck of the HMAS Swan, off Dunsborough, WA. Photo: Glen Cowans.