As the ocean warms, a body of water called the Antarctic Polar Front—an upward movement of nutrient-rich sea that supports a huge abundance of marine life—is being pushed further south.

随着海洋变暖，一种被称为南极极锋的水体正被逐步推向南方；南极极锋是一种富含营养的海洋向上运动，它支持着大量海洋生物的生存。

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As the ocean warms, a body of water called the Antarctic Polar Front—an upward movement of the nutrient-rich sea that supports a huge abundance of marine life—is being pushed further south.

随着海洋变暖，一个被称为南极极锋的水体——一个支持大量海洋生物生存的营养丰富的海水上升运动——正被进一步推向南方。

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Swift and agile, Antarctic fur seals rely on their powerful front flippers to propel them through the water; smaller hind flippers help with steering.

动作灵活而快捷的南极海豹依靠其强大的鳍状前肢，让它们在水中顺利前行；小一些的后鳍帮助控制方向。

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