Great
White Sharks Travel

   
The great white shark, immortalized as one of the world's most awesome
predators in the movie "Jaws," has long been considered a
homebody, hunting in a narrow band of coastal waters and rarely
venturing far from shore.

   
Now, a new study released on Wednesday shows that these massive sharks
are actually world travelers, with some swimming thousands of miles into
the open ocean on mysterious migrations that broadly expand the powerful
carnivores' range across the globe.

 能旅行的大白鲨

      
在一部叫作"嘴"的影片中，大白鲨因被刻画成世界上最令人敬畏的捕食动物之一而声名显扬。长久以来，人们一直认为大白鲨只在家门口游弋，在狭窄的海岸水域中捕食，极少冒险远离海岸。

        
但是，上周三公布的一项新的研究表明，这些庞大的鲨鱼实际上是世界旅行者，它们有些可游进广阔的大洋几千英里，神秘的迁移使这种强大的肉食动物的掠夺范围跨越全球。

   "I
was shocked by the results," said Burney Le Boeuf, a biologist and
one of the authors of the new study published in the current edition of
the journal Nature. "Going in to this, what we expected was that
white sharks were just coastal animals that breed in Southern
California, then migrate a few hundred miles north to feed on seals. But
it turns out they've got a life at sea, and when they're in the open
ocean, they're diving very deep at times."

        
生物学家伯尼·勒·伯夫(Burney Le Boeuf)是发表在本期《自然》杂志这项新研究的作者之一。他说："这个结果令我震惊。以前，我们认为白鲨仅是海岸动物，在南加州繁殖，然后向北迁移几百英里捕食海豹，但事实上，它们生活在海中，当游到开阔的大洋时，它们有时潜水很深。"
   

    
The study used electronic tagging to track six adult sharks via
satellite, revealing a surprisingly broad range for one of the most
feared and misunderstood creatures of the deep. One male shark tagged by
the team swam all the way from the California coast to the warm waters
off Hawaii, a journey of some 2,280 miles.

  The
world's largest predatory fish, the great white can grow up to 21 feet
in length and weigh as much as 4,800 pounds.

  Usually
found in temperate offshore waters ranging from California to Australia,
Southern Africa and beyond, the great white has been tracked most
frequently around coastal colonies of seals and sea lions which form the
basis of its diet. But the migration patterns and environmental
preferences of the sharks have remained elusive, increasing the mystery
surrounding the giant hunter. Discovery

       
这项研究使用了电子标记，经卫星跟踪了6只成年鲨鱼，揭示了这种最令人恐惧和误解的海洋动物具有惊人的活动范围。该组研究人员追踪的一只雄鲨鱼从加州海岸一路游到夏威夷近海温水域，行程大约2280英里。

     
 作为世界上最大的掠食鱼类，大白鲨身长能长到21英尺，体重高达4800磅。

      
常常能在加州到澳大利亚，南非附近温和的近海水域中发现大白鲨，它们经常出没在海豹和海狮成群的海岸，海豹和海狮是大白鲨的主食。但是，这些鲨鱼的迁移方式和对环境的选择仍然难以捉摸，这为这个巨大的捕食者增添了神秘。
发现