- ..these fur seals drive the world's most notorious predator...
这群毛皮海豹将最闻名于世的捕食者 - ..back out to sea.
赶回了大海 - Here, animals are adapting to new challenges
在这个瞬息万变的世界里 - in a rapidly changing world.
动物正适应着新的挑战 - In the Arctic...
在北极 - ..monumental change is a regular event.
巨大的变化随处可见 - Summer.
夏天