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fanweiya
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<img src="http://ift.tt/1sIRYxQ"><br><b>Great Barrier Reef Near Whitsunday Islands</b><br>
An astronaut aboard the International Space Station used a powerful lens to photograph these three reefs in Australia&rsquo;s Great Barrier Reef on Oct. 12, 2015. Reefs are easy to spot from space because the iridescent blues of shallow lagoons contrast sharply with the dark blues of deep water.<br><br>
Great Barrier Reef Near Whitsunday Islands
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