一頭鼬鯊(tiger shark)在巴哈馬外海游泳。這種掠食者也是完美無缺的食腐動物,具備絕佳的視覺與嗅覺。PHOTOGRAPH BY BRIAN J. SKERRY, NAT GEO IMAGE COLLECTION
一隻長嘴沼澤鷦鷯 (marsh wren)在紐澤西州莫尼島上的海濱草叢中鳴唱。PHOTOGRAPH BY JOEL SARTORE, NAT GEO IMAGE COLLECTION
一隻沼澤帶鵐(swamp sparrow)在馬里蘭州黑水國家野生動物保護區覓食。PHOTOGRAPH BY GEORGE GRALL, NAT GEO IMAGE COLLECTION
在夏威夷的法國軍艦環礁(French Frigate Shoals),一頭鯊魚緊逼一隻信天翁幼鳥。PHOTOGRAPH BY BILL CURTSINGER, NAT GEO IMAGE COLLECTION
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