Today"s photo brings us to the banks of Caño Cristales, the "liquid rainbow" that cuts a prismatic path through the heart of Colombia. From June through November, when the clear water is low, the abundant underwater plants that cover the riverbed show off their red, yellow, green, and blue hues. The star of the show—especially in this photo—is Macarenia clavigera, a riverweed that ranges from bright red to deep crimson or purple depending on its intake of sun rays. In August and September, when the florid flora is at its peak, the river"s a coveted nature excursion: Because the ecosystem is so fragile, visits are limited to guided tours.
Go with the rainbow flow
Today in History
More Desktop Wallpapers:
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Traditional red fishermens cabins, Reine, Norway
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Vernazza, Cinque Terre, Liguria, Italy
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Welcome to the Year of the Pig
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Peach trees in Cieza, Murcia, Spain
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Alaska Bald Eagle Festival
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Up, up, and away for Hot Air Balloon Day
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Digging the birds
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World Rainforest Day
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National Cherry Blossom Festival, Washington, DC
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Visiting Ahch-To on Star Wars Day
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Celebrating Flag Day
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From garden to table?
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Next stop, Tofino
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Mountain mists over Bavaria
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Cherry blossoms spring to life
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Endangered Species Day
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The meeting point of the winds
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Fall for birding
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Happy Diwali!
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Bavljenac Island
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Þorrablót, Icelandic midwinter festival
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American bison
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harlem
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Ancient art in the Amazon
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Over and under the delta
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The tale of squirrels like Nutkin
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La Rocque Harbour, Island of Jersey
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High tide at the walled city
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It’s Weihnachtsmarkt time!
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A wonderland in winter
Bing Wallpaper Gallery

