The seascape is in constant flux as broken ice is moved on by winds and currents. 海洋在不断地变迁, 破裂的冰块在风和洋流的作用下不停地移动着
The ice is becoming too weak to support a male polar bear. 冰面开始变薄 已经很难承受一只雄性北极熊的重量
This is a challenging time for the bear family. 对于北极熊一家来说 这是一个极富挑战性的时刻
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
As the sun's influence increases, the sea ice seems to take on a life of its own. 随着太阳的威力逐渐增强, 海冰仿佛有了自己的生命
0ut on the sea ice, the female can hunt for seals 雌熊有可能在海冰上捕食到海豹
It may look like fun but this is serious training for the task ahead. 可能看起来很好玩, 但这都是为马上来临的严峻挑战所做的训练