Zebra stripes
© Gary van Eijk/500px/Getty Images
Why do zebras have stripes? As far as science is concerned, the answer's not in black and white. Originally, it was thought that stripes camouflage the animals amid tall savanna grasses like those found here in Tanzania. But other research has suggested they serve as an illusion for predators,as reflective protection from hot sunlight, or even as a visual bug repellent. One thing we do know: Stripes help us identify zebras by species—like this Grant's zebra, recognizable by the stripes across its belly—and even as individuals, since their stripe patterns are unique, just like human fingerprints.
一片广阔的北极地区
禽鸟派对
雾蒙蒙的秋天
不要把它们称为矮马
茶树梯田
壮观的火山景观
电影般的宁静
小熊仔,大荒野