At 132,974 square miles, the Great Barrier Reef is about half the size of Texas, a statistic that becomes even more amazing when you learn the reef was created by teeny, tiny marine invertebrates. Coral reefs are formed when colonies of coral polyps secrete hard exoskeletons made of calcium carbonate, slowly building an underwater home that supports marine life of all shapes and sizes. That’s a feat worth protecting.
A Great view from above
Today in History
More Desktop Wallpapers:
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Love blossoms
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The circular castle of Cornwall
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A midsummer twilight s dream
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Thorrablot: The Icelandic midwinter festival
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Nature Photography Day
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Jasper National Park, Alberta, Canada
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You won’t see this on Mulberry Street
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Watch your step
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World Meteorological Day
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Asteroid Day
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A Festivus for the rest of us
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The Aomori Nebuta Festival parade, Japan
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Last day of National Park Week
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Reflections on Memorial Day
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Polar bears
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Taiwan yuhinas in Alishan National Scenic Area
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Honoring our fallen heroes
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Birds of a feather
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It s International Jazz Day
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World Art Day
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The globe skimmers return
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Juneteenth
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A hero for the 21st century
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A tree amid the Tetons
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Telašćica Nature Park, Dugi Otok, Croatia
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We heart Berlin
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Keyholes to the kingdom
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Capitol Reef National Park, Utah
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Happy Fathers Day!
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Joan charges Riverside Park