Polar regions of Earth

Visualization of the ice and snow covering Earth's northern and southern polar regions
Northern Hemisphere permafrost (permanently frozen ground) in purple

The polar regions, also called the frigid zones or polar zones, of Earth are Earth's polar ice caps, the regions of the planet that surround its geographical poles (the North and South Poles), lying within the polar circles. These high latitudes are dominated by floating sea ice covering much of the Arctic Ocean in the north, and by the Antarctic ice sheet on the continent of Antarctica and the Southern Ocean in the south.

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