由于北极的大片浮冰向南移动，挪威人的航行路线由向西航行改成了向开阔的大西洋航行，后来向西的航行整个都终止了。
As the Arctic ice pack spread southward, Norse voyages to the west were rerouted into the open Atlantic, then ended altogether.
北极熊生活在有大片浮冰的北极南部边缘地带。
Polar bears living in a large southern edge of the Arctic pack ice zone.
阿拉斯加地区的海象——尤其是正处于繁殖期的雌海象，在夏秋季节通常活跃在北极的大片浮冰上。
Alaska's walrus, especially breeding females, in summer and fall are usually found on the Arctic ice pack.
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