page_title: Antarctic sea ice
hierarchical_section_title: Antarctic sea ice
caption_attribution_description: English: Collection: NASA Scientific Visualization Studio Collection.Compilation of NASA stills, film and video, created in partnership with Internet Archive.Image n.a003402. This image shows a view of the Earth on September 21, 2005 with the full Antarctic region visible. Description: This matching pair of images showing a global view of the Arctic and Antarctic . The images also show the sea ice in the date at which it was at its minimum extent in the northern hemisphere.
context_page_description: Antarctic sea ice is the sea ice of the Southern Ocean. It extends far north in winter and retreats almost to the coastline each summer. Sea ice is frozen seawater that is usually less than a few metres thick. This is in contrast to ice shelves, which are formed by glaciers, float in the sea, and are up to a kilometer thick. There are two subdivisions of sea ice: fast ice, which is attached to land; and ice floes, which are not.
  Sea ice in the Southern Ocean melts from the bottom instead of from the surface like Arctic ice because it is covered in snow. As a result, melt ponds are rarely observed. On average, Antarctic sea ice is younger, thinner, warmer, saltier, and more mobile than Arctic sea ice. It is not as well-studied as Arctic ice, which is more accessible.
context_section_description: Antarctic sea ice is the sea ice of the Southern Ocean. It extends far north in winter and retreats almost to the coastline each summer. Sea ice is frozen seawater that is usually less than a few metres thick. This is in contrast to ice shelves, which are formed by glaciers, float in the sea, and are up to a kilometer thick. There are two subdivisions of sea ice: fast ice, which is attached to land; and ice floes, which are not.
  Sea ice in the Southern Ocean melts from the bottom instead of from the surface like Arctic ice because it is covered in snow. As a result, melt ponds are rarely observed. On average, Antarctic sea ice is younger, thinner, warmer, saltier, and more mobile than Arctic sea ice. It is not as well-studied as Arctic ice, which is more accessible.
caption: Earth image on September 21, 2005 with the full Antarctic region visible
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