Hiding in a narrow branch of a river, deep within the Amazon rain forest, is a strange animal that one wouldn't expect to find here, thousands of kilometers away from the ocean: the Pink River Dolphin, one of the most mysterious and extraordinary species of the animal kingdom. Where does it come from? How different is it from other dolphins? How was it able to adapt to this lus...$越是好斗,老练,领地意识强的亚马逊“河”豚越是显粉红色,结尾看在数量锐减时产仔周数也变短,这种能拧过头来给人一口快速适应淡水的生物当真是物竞天择的佼佼者