the rivers are not only a vital source of drinking water, 河流不仅是唯一能解渴的重要水源
This is one of the largest concentrations of Nile crocodiles in Africa, 这里是非洲一处最大的尼罗鳄聚集地
Each year nearly two million animals migrate across the Serengeti plains 每年都会有将近200万只角马 横越塞伦盖蒂平原
The Mara river, snaking across the plains of East Africa. 马拉河蜿蜒地穿过东非平原
the otters will actively harass these great reptiles. 反而会主动骚扰这些大块头的爬行动物
Only the adults have the speed and agility needed to make a catch. 只有成年水獭才具备 捕鱼所需的速度和灵巧
Fishing practice begins when the cubs are four months old. 小水獭在4个月大时就开始学习捕鱼
Indian rivers are home to the world's most social otter - 印度河里住着世界上最具社会性的水獭