What is the Barrier Reef significance?

The Great Barrier Reef's significance for Australia operates across ecological, economic, cultural, and international dimensions. As the world's largest coral reef system, stretching 2,300 kilometres along the Queensland coast and covering 344,400 square kilometres, it is the country's most globally recognised natural asset and one of the most studied marine ecosystems on the planet.

Economically, the reef supports about 64,000 full-time equivalent jobs and contributes about 6.4 billion dollars annually to the Queensland economy through tourism, recreational fishing, commercial fishing, and associated services. Cairns, Port Douglas, Airlie Beach in the Whitsundays, and Townsville are the main reef-tourism gateways. The Great Barrier Reef Marine Park Authority, established in 1975, regulates activities across the marine park to balance these uses with conservation.

Culturally, the reef is central to the heritage of about 70 Aboriginal and Torres Strait Islander Traditional Owner groups whose sea country includes parts of the reef and adjacent coastline. The Reef 2050 Long-Term Sustainability Plan, the National Indigenous Heritage Inventory, and the Indigenous Sea Country Plans formally embed Traditional Owner perspectives into reef management. Non-Indigenous Australians also relate to the reef as a foundational national symbol, alongside Uluru and the Sydney Opera House.

Internationally, the reef has been on the UNESCO World Heritage List since 1981, recognised for its outstanding universal value across all four natural criteria, the only natural property in the world to meet all four. UNESCO has repeatedly considered listing the reef as World Heritage in danger because of climate impacts, most recently in 2021 and 2023, prompting successive Australian governments to commit billions of dollars to water quality, predator control, and emissions reductions. The reef's future has become a touchstone for Australian climate policy and for the country's reputation as an environmental steward.