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The Great Barrier Reef is the largest coral reef system in the world, composed of over 2,900 individual reefs and 900 islands stretching for 2,600 kilometres (1,600 mi) over an area of approximately . The reef is located in the Coral Sea, off the coast of Queensland in northeast Australia.

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Wikipedia About Great Barrier Reef

The Great Barrier Reef is the largest coral reef system in the world, composed of over 2,900 individual reefs and 900 islands stretching for 2,600 kilometres (1,600 mi) over an area of approximately . The reef is located in the Coral Sea, off the coast of Queensland in northeast Australia.

The Great Barrier Reef can be seen from outer space and is the world's biggest single structure made by living organisms. This reef structure is composed of and built by billions of tiny organisms, known as coral polyps. The Great Barrier Reef supports a wide diversity of life, and was selected as a World Heritage Site in 1981. CNN has labelled it one of the 7 natural wonders of the world. The Queensland National Trust has named it a state icon of Queensland.

A large part of the reef is protected by the Great Barrier Reef Marine Park, which helps to limit the impact of human use, such as overfishing and tourism. Other environmental pressures to the reef and its ecosystem include water quality from runoff, climate change accompanied by mass coral bleaching, and cyclic outbreaks of the crown-of-thorns starfish.

The Great Barrier Reef has long been known to and utilised by the Aboriginal Australian and Torres Strait Islander peoples, and is an important part of local groups' cultures and spirituality. The reef is a very popular destination for tourists, especially in the Whitsundays and Cairns regions. Tourism is also an important economic activity for the region. Fishing also occurs in the region, generating AU$ 1 billion per year.

Physiography

The Great Barrier Reef is a distinct physiographic province of the larger East Australian Cordillera division. It encompasses the smaller Murray Islands physiographic section.

Geology and geography

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The Great Barrier Reef reaches from Torres Strait (between Bramble Cay, its northernmost island, and the south coast of Papua New Guinea) in the north to the unnamed passage between Lady Elliot Island (its southernmost island) and Fraser Island in the south. Lady Elliot Island is located southeast of Bramble Cay as the crow flies.

Australia has moved northwards at a rate of per year, starting during the Cainozoic. Eastern Australia experienced a period of tectonic uplift, leading to the drainage divide in Queensland moving inland. Also during this time, Queensland experienced volcanic eruptions leading to central and shield volcanoes and basalt flows. Some of these granitic outcrops have become high islands. After the Coral Sea Basin was formed, coral reefs began to grow in the Basin, but until about 25 million years ago, northern Queensland was still in temperate waters south of the tropics - too cool to support coral growth. The history of the development of the Great Barrier Reef is complex; after Queensland drifted into tropical waters, the history is largely influenced by how reefs fluctuate (grow and recede) as the sea level changes. They can increase in diameter from per year, and grow vertically anywhere from 1 to 25 centimetres (0.4–12 in) per year; however, they are limited to growing above a depth of due to their need for sunlight, and cannot grow above sea level. When Queensland moved into tropical waters 24 million years ago, some coral grew, but a sedimentation regime quickly developed with erosion of the Great Dividing Range; creating river deltas, oozes and turbidites, which would have been unsuitable conditions for coral growth. 10 million years ago, the sea level significantly lowered, which further enabled the sedimentation. The substrate of the GBR may have needed to build up from the sediment until the edge of the substrate was too far away for suspended sediments to have an inhibiting effect on coral growth. In addition, approximately 400,000 years ago there was a particularly warm interglacial period with higher sea levels and a 4 degree Celsius (7.2 degree Fahrenheit) change in water temperature.

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Search results for Great Barrier Reef

reefED: Educate to Keep it Great

Collection of resources about the animals, plants, habitats, and features of the Great Barrier Reef.www.reefed.edu.au/

Compass Cruises & Reef Encounter

Offers day, overnight, and diving cruises.www.reeftrip.com/

Barrier Reef Australia

Features Port Douglas and Cairns travel information on accommodation, Great Barrier Reef tours, scuba diving, and fishing and rainforest activities.www.barrierreefaustralia.com/

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Gallery of the Reef - Panographic Prints and Original Art Work of the Great Barrier Reef by Allan and Kimberley Payard - Underwater photographs and watercolour art ...www.greatbarrierreef.net.au/index.html

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News about Great Barrier Reef

Sunsea closes operations to the Reef

Magnetic TimesSunsea Cruises has announced that it has been forced to cease its Great Barrier Reef day tours on 12 October 2008, after ongoing business evaluations determined that it is not financially viable to continue operation.http://www.magnetictimes.com/index.php?d=1&ID=2870

Accused murderer to face justice

Adelaide NowALABAMA detectives are ready to pounce on David Gabriel Watson for the alleged murder of his wife during a honeymoon diving expedition on Queensland's Great Barrier Reef.http://www.news.com.au/adelaidenow/story/0,22606,24430421-50...

Dive death accused to face justice

Daily TelegraphDETECTIVES are ready to pounce on David Gabriel Watson for the alleged murder of his wife during a honeymoon diving expedition on the Great Barrier Reef.http://www.news.com.au/dailytelegraph/story/0,22049,24430311...

Coral predator is several species

Herald SunTHE notorious crown-of-thorns starfish - an enemy of the Great Barrier Reef - comprises four species, not one, biologists reported today.http://www.news.com.au/heraldsun/story/0,21985,24429916-2433...

Brian Lapointe sounds alarm to save coral reefs

Palm Beach Daily NewsMore than 20 years ago when Brian Lapointe was a graduate student, he began his life's work: studying the coral reef ecosystems of the Florida Keys.http://www.palmbeachdailynews.com/news/content/news/2008/10/...

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Report highlights grave fears for Barrier Reef

Australian Broadcasting Corp.A new report tabled in Queensland Parliament paints a bleak picture of the Great Barrier Reef. Premier Anna Bligh says the State Government will release regular updates on the reef's condition. Ms Bligh says data taken last year shows more than 6 ... http://www.abc.net.au/news/stories/2008/10/08/2385212.htm?se...

Qld farmers may face new rules on Reef

ninemsnFarmers may face tougher regulations after a report found agricultural run-off was killing the Great Barrier Reef, with some sections already irreversibly damaged. Queensland Premier Anna Bligh on Wednesday released a report into the water quality of ... http://news.ninemsn.com.au/article.aspx?id=643348

Govt accused of reef protection overreaction

Australian Broadcasting Corp.The Queensland Farmers Federation says the State Government is overreacting with threats to regulate to protect the Great Barrier Reef from farm pollution and run-off. The Premier has convened a summit for later this month to discuss a new report ... http://www.abc.net.au/news/stories/2008/10/09/2386069.htm?se...

Govt well-equipped to ensure reef's future: Garrett

Big Pond NewsFederal Environment Minister Peter Garrett says the Government knows it must do more to save the Great Barrier Reef. Queensland Premier Anna Bligh has called a summit later this month to discuss a new report that reveals there are still major ... http://bigpond.com/news/national/content/20081008/2385814.as...

Orpheus a foodie's dream

StuffLocated 80km north of Townsville, Orpheus is an exclusive Great Barrier Reef hideaway for the work-weary and those serious about leaving the world behind. With no cars, in-room televisions, young children or pesky day-trippers, the island is like a ... http://www.stuff.co.nz/4725620a34.html

Search results for Great Barrier Reef

Great Barrier Reef - Australia's great natural wonder

Australia's most remarkable natural gift, the Great Barrier Reef is blessed with the breathtaking beauty of the world's largest coral reef, impressive coral cays, literally ... http://www.greatbarrierreef.org/

Port Douglas Accommodation - Port Douglas Apartments, Holiday ...

Port Douglas accommodation, holiday accommodation great barrier reef, including apartments, beach houses, resorts and self catering accommodation, From budget to luxury ... http://www.barrierreefaustralia.com/

Great Barrier Reef

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Great Barrier Reef Property Sales

Ownership of property on Hamilton Island is a unique and rare opportunity for a few fortunate individuals, be that Australian or International. Investors in Hamilton Island ... http://www.greatbarrierreefpropertysales.com.au/

overv1

JUST OVERVIEW Great Barrier Reef and Islands AROUND CAIRNS. The largest reef in the world measuring 2011 km in length and 72 km across at its widest point.http://www2.eis.net.au/~nqtds/infocomm/1overv1.html
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WebExtra: WW II Ship To Become Artificial ReefWebExtra: The Vandenberg, a World War II vessel, will join other ships as an artificial reef in the Florida marine sanctuary.Windows Media - Video

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Islands of the Great Barrier Reef showcaseStretching the Queensland coastline, the Islands of the Great Barrier Reef offer visitors a unique chance to live amongst the single largest living thing in the world.Flash - Video

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Answers for Great Barrier Reef

TINKERTOY .....  the 1 & onlyWhat city or cities in Australia are closest to the Great Barrier Reef??TINKERTOY ..... the 1 & onlyCairns - Cairns - Cairns ! North Queensland. http://www.cairns.com.au You can't see the Great Barrier Reef from Sydney. Sydney to Cairns it's about a 3-4 hour flight. Main tour operators are :: ...simkhyadoes anyone have an information report on the great barrier reef or good sites?simkhyaGreat sites below. They are much more than just a start.BeachGurl<3why is the great barrier reef called a region?BeachGurl<3here's part ftom the link below: The Great Barrier Reef lies off the east coast of Australia. It is the world's largest coral reef. Coral reefs have been called the "tropical rain forests of the oc...Gyanwhat can you do at the great barrier reef?GyanOMG! Cairns is the best place to visit...it is actually pronounced "CANS". When i was there we went scuba diving in the great barrier reef. We also went bunjy jumping at A.J. Hackets site in the most ...eBBBBONNEEYHow is the condition of the Great Barrier Reef and what are some of the issues affecting it??eBBBBONNEEYThis may help: General information ~ http://www.answers.com/topic/great-barrier-reef Environmental threats: http://www.answers.com/topic/environmental-threats-to-the-great-barrier-reef?nr=1&lsc=t...
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