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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Heavens Gate Cave, Tianmen Mountain National Park, China
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International Archaeology Day
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Cinco de Mayo
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Merry and bright
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Labor Day parade in 1915 Chicago
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Shi Shi Beach, Olympic National Park, Washington
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Bisti/De-Na-Zin Wilderness, New Mexico
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Negratín Reservoir, Granada, Spain
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The natural ice wall of Misotsuchi, Chichibu, Japan
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Chestnut-headed bee-eaters, Bardia National Park, Nepal
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Earthrise on Moon Day
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The Bahamas
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Summer winds down in the Hamptons
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The Aomori Nebuta Festival parade, Japan
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National Roller Coaster Day
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Wander the ancient medina
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An oceanic valentine
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Le Beaujolais nouveau est arrivé!
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Here s looking Atchafalaya
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Looking down upon Edinburgh
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It’s Art Deco Weekend in Miami
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Brown bears, Katmai National Park and Preserve, Alaska
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Tortula moss, Netherlands
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Go with the rainbow flow
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New York City Marathon
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Feature Attraction: 85 years at the drive-in
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Festivus
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Horse Head Rock, New South Wales, Australia
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It’s Penguin Awareness Day
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Lake Peipus, Estonia
Bing Wallpaper Gallery

