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Humans Caused Historic Great Barrier Reef CollapseWater pollution off the coast of Australia killed branching coral decades ago
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Secret Lives of Manta Rays RevealedManta rays gather in the Great Barrier Reef in winter and autumn.
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Image Gallery: Great Barrier Reef Through TimeFrom cyclones to predatory starfish, various factors are wreaking havoc on the world's largest reef.
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Half of Great Barrier Reef Lost in Past 3 DecadesThe world's largest reef is on a steep decline, vanishing in front of researchers' eyes.
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Chilling News: Great Barrier Reef Is Heating UpThe reef waters have warmed by 0.36 degrees Fahrenheit in 25 years.
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Google Goes Diving on The Great Barrier ReefNew underwater views of the Great Barrier Reef debut as activists fight to save it from a neighboring mega-mine.
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Surprising Coral Diversity Rivals Great Barrier ReefThe coral diversity in the West Indian Ocean, especially around Madagascar, is greater than previously believed, new research shows.
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Great Barrier Reef: Facts, Location & Animals
Australia's sprawling coral reef is the largest natural structure on Earth.
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Distant Undersea Eruptions Help Rebuild Great Barrier ReefVolcanic pumice shuttles new species into reef.
