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 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 Adults share their...
For the past five million years, 在过去的500万年中 Arizona's Colorado River has eaten away at the desert sandstone to create a gigantic canyon. 亚利桑那州的科罗拉多河冲走了大量沙石，形成一个巨大深邃的峡谷 It's ove...
A grizzly bear. From famine to feast, he's spoilt for choice. 一只灰熊。它已经很久没有打牙祭了，早就盼着这个机会 This Canadian bear is very special. 这只加拿大熊很特别 He's learnt to dive for his dinner. 它学会了潜...
Giant salamanders, the world's largest amphibian, almost two metres long. 大鲵世界上最大的两栖动物，几乎能长到2米长 They're the only large predator in these icy waters. They begin their hunt at night. 它们是这些冰水中唯一的...
Invertebrates dominate these upper reaches. 无脊椎动物统治着上游河段 The hellgrammite, its body flattened to reduce drag, 这是鱼蛉，其扁平的身体能减少水的冲击力 has bushy gills to extract oxygen from the current. 并依靠...
Fresh water's journey starts here, high in the mountains. 淡水之旅就是从这些高山之巅开始的 Growing from humble streams to mighty rivers, it will travel hundreds of miles to the sea. 涓涓细流汇集成泱泱大河，行程数百英里...
Only 3% of the water on our planet is fresh. 地球上只有3%的水是淡水 Yet these precious waters are rich with surprise. 可是这些珍贵的淡水中却充满了惊奇 All life on land is ultimately dependant upon fresh water. 所有陆地生命...
A new day and a new opportunity. 新的一天，新的机遇 The flock stay in close contact by calling to one another. 鹤群通过互相鸣叫保持密切联系 Weak from lack of food and water, they use thermals, rising columns of warm air, to gai...
On the highest summits of our planet, nothing can live permanently. 在地球上最高的地方，没有什么生物能在此永久生存 The highest peak of all, Mount Everest. 世界上最高的山峰 Five and a half miles above sea level and still...
Musk deer make the most of a short flush of spring foods. 许多春季食物才刚露面不久，便已被麝鹿一扫而光 This male smells a potential mate. 这只公鹿闻到了未来配偶的气味 The red panda, rarely glimpsed in the wild. 小熊...
