The adults close ranks around their young, presenting a wall of blubber and hide. 但成象围成圈保护小象, 构成了一堵坚固的脂肪皮墙
but with this platform now gone, they need a new place to haul out and nurse their young. 但这块平台已经消失,它们需要新的地方哺育幼仔
They've come to make the most of the brief flush of food and to produce their young. 它们来寻找美食和繁衍后代
Their chicks join the growing band of youngsters exploring the tundra. 它们的小鸟跟其他小鸟一起探索冻土地带
They use scree slopes to protect their eggs, 它们利用岩肖山坡保护鸟蛋
They seek bare rock on which to lay their eggs and they look rather like penguins, too. 它们寻找裸岩 好在上面产蛋, 它们长得也有几分像企鹅
Little auks arrive in their millions. 小海雀成千上万地飞来
0ne out of every two cubs do not survive their first year out on the ice. 两只幼熊中往往会有一只无法在第一年存活下来
Their mother stretches her legs after five months under the snow. 它们的母亲在雪下呆了5个月后终于可以出来伸伸腿
Forming a defensive ring around their calves, the adults present a barricade that few hunters could breach. 成牛围成圈以保护它们的小牛, 一般的猎食动物很难突破这层封锁