To trap its prey it goes fishing with a line of silk. 它利用一根根的丝来诱捕猎物
and is loaded with droplets of mucus. 上面缀着一串粘液滴
This galaxy of little lights is created by thousands of living creatures. 这“满天星斗”其实是 几千只小动物发出的荧光
Here, live some of the strangest and least-known animals on the planet. 这里住着一些地球上最奇异 和最鲜为人知的动物
Beneath our feet are countless miles of cave shafts and passages. 我们脚下有着绵延不绝的洞窟和隧道
This is the end of the river's journey. 这是淡水之旅的终点
and form one of the most productive habitats on the planet. 成为地球上一处 最肥沃的野生动物栖息地
400,000 greater snow geese flock to the estuaries along the Atlantic coast of the United States 40万只大西洋雪雁成群飞往 美国大西洋海岸的河口地带