noun
EXAMPLES FROM CORPUS
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Flotillas of tabular icebergs and ice islands sail among the pack ice .
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Most adult male bears spend their lives out on the pack ice , living mainly on seals.
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The pack ice and fast ice that spread over polar seas form vast sheets many hundreds of square kilometres in area.
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The September-October northern limit of pack ice varies considerably from year to year.
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They penetrate south to varying degrees, blue and minke whales often appearing well south of the pack ice edge.