seals risk their lives every time they set out to eat. 海豹每次前去觅食都要冒着生命危险
At this crucial time in our history, 在历史长河中的这个关键时刻
But since Darwin's time, it has changed beyond recognition... 然而从达尔文时代起 它已经变得面目全非
the time spent working out how to get to it 花点时间想办法获取食物
The time has come to move to a new home. 搬新家
With less time spent looking for food,there is more time for play. 觅食时间缩短 使得他们有更多时间可以玩耍
Next time, we venture to the newest habitat on Earth, 下一集 我们向地球上最新的栖息地进发
This time there's more than enough transport to go around. 这次有足够的交通工具了