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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Celebrating the first day of spring
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Come out of your shell for World Turtle Day
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A rock in a wild place
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Penguin Awareness Day
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Venice Skatepark, Los Angeles, California
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Presidents Day
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Groovy!
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Belize Barrier Reef
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Irohazaka road
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World Migratory Bird Day
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Taiwan yuhinas in Alishan National Scenic Area
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Trevi in bloom
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Bridge over the River Tara
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Modica, Sicily, Italy
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A long, erratic commute
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The moon rises for Mid-Autumn Festival
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Happy Boxing Day!
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Happy Thanksgiving!
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Gauchos showcase Argentina’s independent spirit
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Happy World Photography Day!
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A night of art and culture
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Christmas Bird Count
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The birth of Bauhaus
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Cosplay strongly encouraged
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Cheers! It’s National Wine Day
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Earth Science Week
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Mountains fit for a queen
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Happy New Years Eve!
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Sailing on thick ice
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Happy Lunar New Year!