英语听力：自然百科 冰冻星球 前往地球尽头—5（在线收听） |
It's time for the couple to go their separate ways. She will give birth to his cubs alone in nine months time. And he may never see her again. He returns to the frozen ocean, no doubt relieved to resume his solitary ways. And just in time, the ice beneath his feet will soon be gone. Each spring, the Arctic Ocean undergoes an extraordinary transformation. An area of sea ice the size of Europe melts, exposing the rich waters beneath.
Short-tailed shearwaters have traveled ten thousand miles from Australia to be here. Eighteen million visitors darken the skies, the largest gathering of sea birds on the planet.
Humpback whales come all the way from the equator to feed in these rich polar waters. Their giant tails are five meters across, simply raising them above the surface, give the whales enough downward momentum to reach the great swarm of krill and herring below. |
| 原文地址：http://www.tingroom.com/lesson/zrbaike/2012/260359.html |