Blooming pillar corals, green sea turtles, and colorful reef fishes—welcome to the underwater universe of coral reefs. They are formed by tiny marine organisms called coral polyps, which create vast colonies housing many species. As we celebrate their beauty and benefits, it"s vital to recognize the lurking threats of climate change, pollution, and harmful human activities.
Coral Reef Awareness Week
Today in History
More Desktop Wallpapers:
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Sitka shines on Alaska Day
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It s International Jazz Day
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To Roswell, and beyond!
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Celebrating Minnesota’s statehood
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Frozen beauty
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In the belly of Fat Bear Week
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Monet still makes an impression
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International Zebra Day
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Wallabies at sunrise, Australia
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Celebrating Charles Darwin
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Whale hello there!
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Beaver achievers
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Vatican City with St. Peters Basilica
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Is that a buzzing sound?
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First day of National Park Week
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Engineering an artificial harbor in Normandy
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Silver-studded blue butterflies
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A tree amid the Tetons
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A light on National Hispanic Heritage Month
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In Texas, even the riverbend is big
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Tafilalet oasis in Morocco
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Earth Science Week
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Abbey Gardens in Bury St Edmunds, England
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Ruins of St. Dwynwens Church, Ynys Llanddwyn, Wales
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North Sea at sunset, Norddorf, Germany
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Smithsonian Secretary Lonnie Bunch on the institution s 175th anniversary
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Rainbow River, Rainbow Springs State Park, Florida
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Women s History Month
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J.R.R. Tolkien Day
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Avatar Mountains, Zhangjiajie National Forest Park, China
Bing Wallpaper Gallery

