Yawuru Nagulagun / Roebuck Bay

Yawuru Nagulagun / Roebuck Bay Marine Park is a 700-hectare marine protected area at Roebuck Bay, Broome, on the Kimberley coast of northwestern Western Australia. The park protects the intertidal mudflats of Roebuck Bay — one of the most important shorebird habitats in the world. The dual name acknowledges the significance of this bay to the Yawuru people, traditional custodians of Broome and surrounding country. The park is jointly managed by DBCA and the Yawuru community.

Roebuck Bay's extensive intertidal mudflats and seagrass meadows support global concentrations of migratory shorebirds on the East Asian-Australasian Flyway. Up to 300,000 migratory shorebirds congregate here annually, representing approximately 80 species. Critically important species include the great knot, bar-tailed godwit, red knot, broad-billed sandpiper, and curlew sandpiper — all of which breed in Siberia and Alaska and winter in Australia. The bay also supports one of the highest densities of dugongs in WA, a resident bottlenose dolphin population, flatback sea turtles, and saltwater crocodiles. The intertidal mudflats are extraordinarily productive, supporting vast benthic invertebrate communities that feed the shorebirds.

Roebuck Bay's intertidal zone supports productive microbial mats, benthic algae, and abundant invertebrate communities in the mudflat sediments. Seagrass meadows (Halodule uninervis, Halophila ovalis) occur in subtidal areas. Mangroves (Avicennia marina, Rhizophora stylosa) fringe the bay in sheltered areas. The productivity of the intertidal invertebrate community — polychaete worms, bivalves, crabs — underpins the bay's extraordinary shorebird carrying capacity.

Roebuck Bay is a broad, shallow embayment on the Canning Basin coast. The tidal range at Broome is approximately 9 metres (one of the largest tidal ranges on the WA coast), exposing extensive intertidal mudflats at low tide. The bay floor consists of tidal sediments — fine muds and sands deposited by tidal currents. The red pindan cliffs of Broome are composed of Quaternary red sandy sediments.

Tropical monsoonal climate. The wet season (November–April) brings heat, humidity, and tropical cyclones. The dry season (May–October) is the preferred visitor and shorebird roosting season. The 9-metre tidal range creates dramatic tidal flats exposures twice daily. Shorebirds arrive in September-October and depart March-April for their Siberian breeding grounds.

Roebuck Bay is Yawuru sea country. The Yawuru people have managed and used this bay for thousands of years — fishing, collecting shellfish, and maintaining sacred sites. Broome developed as a pearling port from the 1880s, and Japanese, Malay, and Aboriginal pearling divers worked these waters. The cable beach and Roebuck Bay were central to Broome's cosmopolitan multicultural history.

Yawuru Nagulagun Marine Park was established in 1990 with the active involvement of Yawuru Traditional Owners. The park was the first jointly managed marine park in WA. The dual naming reflects the formal recognition of Yawuru sovereignty over their sea country. Roebuck Bay is listed under the Ramsar Convention as an internationally important wetland.

Shorebird roost watching at Town Beach and Roebuck Bay foreshores — particularly spectacular around the time of high tide when thousands of shorebirds are forced off the flats. Guided shorebird tours run by the Broome Bird Observatory (located at the bay's northern shore). The Broome Bird Observatory is a world-renowned international birdwatching destination. Sunset viewing over the bay from Cable Beach.

Roebuck Bay is accessible from Broome townsite. The Broome Bird Observatory is located at the northern end of the bay (30 km from Broome). Town Beach in Broome CBD provides direct shorebird viewing. Broome provides full tourist services including international flights. Optimal visit: September–March for peak shorebird diversity.

The East Asian-Australasian Flyway shorebirds face threats throughout their migration route: habitat loss at breeding grounds in Siberia, food source depletion in Yellow Sea stopover sites (where 70% of mudflats have been reclaimed), and hunting pressure. The extraordinary Roebuck Bay habitat is therefore critical. Local threats include cyclone disturbance, coastal development impacts on intertidal areas, and pollution from the Broome port. The Yawuru Native Title determination (2010) provides a legal basis for Yawuru governance of their sea country.