[00:00:01]Over the next two weeks, the male sees off many rivals

接下来的两周内 公熊击败了多位对手

[00:08:36]but the battles take their toll on him.

但他也为战斗付出了代价

[00:17:00]He is almost spent,

他已筋疲力竭

[00:18:46]but he has ensured that

但他已确保

[00:20:32]no other bears have mated with his female.

不会再有公熊与他的伴侣交配

[00:28:22]It's time for the couple

这对伴侣

[00:29:52]to go their separate ways.

分道扬镳的时候到了

[00:32:25]She will give birth to his cubs, alone, in nine months' time

九个月之后 她将独自产下他的幼崽

[00:37:44]and he may never see her again.

也许他们将天涯永别

[00:40:13]He returns to the frozen ocean,

他回到了冰冻的海洋

[00:44:39]no doubt relieved to resume his solitary ways,

安详的重新开始独居生活

[00:47:59]and just in time.

时机正正好

[00:50:49]The ice beneath his feet will soon be gone.

他脚下的冰不久就要消失

[00:57:36]Each spring, the Arctic Ocean undergoes

每到春天 北冰洋都要经历

[01:00:11]an extraordinary transformation.

一次非凡的转变

[01:03:45]An area of sea ice the size of Europe melts,

面积如欧洲大小的海冰融化

[01:06:58]exposing the rich waters beneath.

冰下富饶的海域重见天日

[01:12:45]Short-tailed shearwaters have travelled 10,000 miles

短尾鹱[短尾水剃鸟]从一万六千公里外的

[01:15:53]from Australia to be here.

澳大利亚飞行至此

[01:26:00]18 million visitors darken the skies,

一千八百万只迁徙鸟遮蔽了天空

[01:28:56]the largest gathering of sea birds on the planet.

地球上最庞大的海鸟群在此聚集