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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National Lighthouse Day
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They’re grrrape!
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Seasonal lights dazzle in Japan
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Amelia Earhart
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Keep your hands inside the ride at all times…
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Negratín Reservoir, Granada, Spain
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A courtyard scene from Spain
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This view is brought to you by…
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The aftermath of a meteorite
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New Year s Eve
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Young black caiman, Tambopata National Reserve, Peru
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Irohazaka Road in fall, Nikko, Tochigi, Japan
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Mexican giant cardon cactus
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Denali National Park
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Struck by Southwestern beauty
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Work out on your way to work
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Over the boardwalk
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Przewalskis horses, Hustai National Park, Mongolia
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A garden of prickly delights
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Jeju Island, South Korea
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It’s Siblings Day!
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Zelenci Nature Reserve, Slovenia
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Beautiful baobabs
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Green sea turtle on World Oceans Day
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Storm rolls over the grasslands
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Yosemite National Park, California
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Happy Boxing Day!
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An ice cap-puccino
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Hawaii Volcanoes National Park turns 103
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National Moth Week
Bing Wallpaper Gallery

