夏季，海上冰雪消融，没有冰面作为平台，它们就无法捕食它们最主要的食物来源-海豹，所以，它们几乎不吃什么东西，禁食直到秋季冰块再次成型。
Sea ice melts in summer. Without ice for a platform they cannot hunt seals, their main prey-and so they fast, eating almost nothing until ice forms in autumn.
夏季，海上冰雪消融，没有冰面作为平台，它们就无法捕食它们最主要的食物来源-海豹，所以，它们几乎不吃什么东西，禁食直到秋季冰块再次成型。
Sea ice melts in summer. Without ice for a platform they cannot hunt seals, their main prey-and so they fast, eating almost nothing until ice forms in autumn.
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