Coral Sea
Human activities

The coastal areas of the Coral Sea were populated at least 40,000 years ago by prehistoric people descending through the northern islands. Those Aboriginal tribes have been dispersed and nowadays only about 70 groups live in the area around the GBR.

The sea was the location for the Battle of the Coral Sea, a major confrontation during World War II between the navies of the Empire of Japan, and the United States and Australia. An example is the wreckage of the USS Lexington found in 2018.

Navigation has long been a traditional human activity on the Coral Sea and there are 10 major ports on the Queensland coast alone. More than 3,500 ships operated in this area in 2007, making over 9,700 voyages that transported coal, sugar, iron ore, timber, oil, chemicals, cattle and other goods. The abundance of coral reefs hinders shipping traffic, and about 50–60 accidents per year were reported between 1990 and 2007 in the GBR alone.

Other economic activities in the sea include fishing and exploration of petroleum deposits in the Gulf of Papua. The sea is also a popular tourism destination. In 2006–2007, tourism on the GBR contributed A$5.1 billion to the Australian economy. The tourism is mostly foreign or from remote parts of Australia, with a local contribution of about A$153 million. In particular, about 14.6 million visits were made to the Coral Sea reefs by the Queensland residents over 12 months in 2008. Growing concerns over the environmental effects of tourism resulted in establishment in 1975 of the Great Barrier Reef Marine Park. There are also smaller state and national parks. In 1981, the Great Barrier Reef was declared a World Heritage Site by UNESCO. From the middle of 2004, approximately one-third of the GBR Marine Park is protected from species removal of any kind, including fishing, without written permission.

It was suggested in 1923 that the Great Barrier Reef contains a major oil reservoir. After the Commonwealth Petroleum Search Subsidies Act of 1957, hydrocarbon exploration increased in Queensland, including a well drilled at Wreck Island in the southern Great Barrier Reef in 1959. In the 1960s, drilling for oil and gas was investigated throughout the Great Barrier Reef, in the Torres Strait, along "the eastern seaboard of Cape York to Princess Charlotte Bay " and along the coast from Cooktown to Fraser Island. In the late 1960s, more exploratory oil wells were drilled near Wreck Island in the Capricorn Channel, and near Darnley Island in the Torres Strait, but with no results. In the 1970s, responding to concern about oil spills, the Australian government forbade petroleum drilling on the GBR. Yet oil spills due to shipping accidents are still a threat to environment, with a total of 282 spills between 1987 and 2002.

Queensland has several major urban centres on the coast including Cairns, Townsville, Mackay, Rockhampton, Bundaberg, Sunshine Coast and the industrial city of Gladstone, which inevitably contaminate the sea. About thirty rivers and hundreds of small streams add continental water, which contains sediments, pesticides and industrial waste. Runoff is especially concerning in the region south of Cairns, as it may receive up to 4200 mm of rain per year. About 90% of sea contamination originates from land farming activities. The area is continuously urbanising, so that the population is expected to increase by 40% by 2026. As a result, 70–90% of the coastal wetlands has been lost over the past decades, and many remaining flora species are endangered.

On 3 April 2010, the Chinese ship Shen Neng 1 carrying 950 tonnes of oil, ran aground east of Rockhampton in Central Queensland, Australia, causing the 2010 Great Barrier Reef oil spill and inflicting the largest damage to the GBR and the Coral Sea so far. The scarred area was roughly 3 km (1.9 mi) long and 250 m (820 ft) wide, and some parts of it have become completely devoid of marine life. There are concerns that there could be considerable long-term damage and it will take 10 to 20 years for the reef to recover. By 13 April 2010, oil tar balls were washing up on the beaches of North West Island, a significant bird rookery and turtle nesting colony.
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