N an arctic toothed whale, Monodon monoceros, having a black-spotted whitish skin and, in the male, a long spiral tusk: family Monodontidae 独角鲸
Narwhals frequently dive to deep waters - the deepest recorded in this study was 1773 metres.
独角鲸经常潜入深水，在这项研究中，最深记录的是1773米。
The data were automatically sent to a satellite when the narwhals surfaced for air between cracks in the sea ice.
当角鲸浮到海冰之间的缝隙处换气时，数据会自动发往卫星。
Paul Nicklen makes friends with polar wildlife, photographing seals, polar bears, narwhals and others in remarkable closeups.
CNN(美国有线新闻网）——Paul Nicklen和极地野生动物做朋友。 他给海豹、北极熊、独角鲸和其它动物拍的特写照片非常引人注目。
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