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sea ice

   Also found in: Wikipedia 0.07 sec.

sea ice

Ice formed from frozen seawater in polar regions. Most sea ice occurs as pack ice, which drifts across the ocean surface; other types of sea ice include fast ice, which is attached to coasts and sometimes the seafloor or between grounded icebergs, and marine ice, which forms at the bottom of ice shelves in Antarctica. The sea ice of the Northern Hemisphere covers about 3 million sq mi (8 million sq km) in September and about 6 million sq mi (15 million sq km) in March. Sea ice in the Southern Hemisphere ranges from about 1.5 million sq mi (4 million sq km) in February to about 8 million sq mi (20 million sq km) in September.
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Melting sea ice will raise ocean levels, which could prove disastrous for island nations and anyone living near coastlines.
On thin ice: the Arctic territory where polar bears roam is literally ... by Revkin, Andrew C. / New York Times Upfront
They concluded that mothers left their calves on sea ice in order to get food.
Meltdown: a scholastic reporter sails far north to learn how a ... by Janes, Patricia / Junior Scholastic
12), you read that sea ice has been declining due to global warming.
Thaw out by Science World
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