Today marks the second-ever World Reef Day, an observance created to help focus global attention on the deteriorating health of our planet"s vital reef systems, and also to help marshal efforts to help them recover. Why should we care about the health of ecosystems such as the Great Barrier Reef, seen in this photo? Because reefs are an easy indicator of how healthy our oceans are. And right now, reefs aren"t doing too well. What can we do? Learn about reefs—not just the dangers that put healthy reefs at risk, but why reefs are such a critical part of Earth"s greater ecosystems.
The largest living organism on Earth
Today in History
More Desktop Wallpapers:
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Colorful houses of Las Palmas de Gran Canaria, Spain
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Manatee Awareness Month
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Milky Way over Zabriskie Point, California
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Kalalau Beach on the Nā Pali Coast, Kauai, Hawaii
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A dreamy start to the Year of the Pig
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World Teachers Day
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Patriot Day
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Nakupenda Beach Nature Reserve, Zanzibar, Tanzania
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Gulf Islands National Seashore, Florida
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Glacial spires in the fog
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It’s Siblings Day!
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Christmas Eve
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This reef is nowhere near the sea…
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A giant relic in Java
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San Gimignano, Siena Tuscany, Italy
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International Lighthouse Lightship Weekend
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Celebrating the first day of spring
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Sunny day, sweepin the clouds away
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A notorious gunfight that was incorrectly named
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Manatee Appreciation Day
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Dalyan, Turkey
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Memorial Day
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International Womens Day
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Merry Christmas!
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Spring equinox
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What are we looking at?
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Brocken spectre in Central Balkan National Park, Bulgaria
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Who s hiding in the kelp?
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Mapping courage in the Seventh Ward
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Frost on autumn leaves
Bing Wallpaper Gallery

