【明報專訊】Looking at a Pacific walrus (太平洋海象), the first impression must be "it's huge"! A male Pacific walrus can weigh up to almost 1,600 kg, which is equivalent to an average car! Another feature that catches your eyes must be their long tusks. They are actually their upper canine teeth (犬齒), which keep growing throughout a walrus' life. Despite the heavy weight, walruses use their tusks like tools to haul themselves out of the water. They also use the tusks to break breathing holes in the ice.
Smarties' Power English 第215期
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