On this day when we honor all the world"s species and their interdependence, the Burchell"s zebra and the cattle egret give us a great example of commensalism, a type of symbiosis in which one species gets a benefit without helping or hurting the other species: As the zebra grazes in the grass, it stirs up insects for the egret to eat.
International Day for Biological Diversity
Today in History
More Desktop Wallpapers:
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Rideau Canal Skateway in Ottawa, Canada
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Behold the mighty Aldeyjarfoss
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Vacuum Chamber 5 at Glenn Research Center
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Splügen Pass, Switzerland
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The glowing waters of the Matsu Islands
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Yarn for Distaff Day
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Wayag Islands in the Raja Ampat Islands of Indonesia
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New York City Marathon
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The moai you know
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Black grouses lekking
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International Surfing Day
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Diwali lights in Guwahati, India
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What a twist
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In the belly of Fat Bear Week
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Think deep thoughts
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Seventeen arches at sunset
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First Cliff Walk
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1934 Labor Day parade, Gastonia, North Carolina
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World Space Week
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Defying gravity on a swing ride
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Make your list and check it twice
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Uredd Rest Area, Norway
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Happy World Laughter Day
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Hezké svátky
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Al-Khazneh in Petra, Jordan
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Merry Christmas!
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A unique perspective from Italy’s ‘golden sands’
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Horsetail Fall, Yosemite National Park, California
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Spring equinox
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Kirkjufell, Iceland