虎鲸捕食竟靠复杂的团队合作
<p><span word="The">The</span> <span word="seal">seal</span> <span word="feels">feels</span> <span word="perfectly">perfectly</span> <span word="safe">safe</span> <span word="lying">lying</span> <span word="on">on</span> <span word="the">the</span> <span word="Antarctic">Antarctic</span> <span word="ice">ice</span> <span word="even">even</span> <span word="if">if</span> <span word="it">it</span> <span word="is">is</span> <span word="surrounded">surrounded</span> <span word="by">by</span> <span word="a">a</span> <span word="pod">pod</span> <span word="of">of</span> <span word="killer">killer</span> <span word="whales">whales</span>.</p><p>对于海豹来说，即使有一大群虎鲸在他周围，躺在南极的冰面上他也觉得异常完美。</p><p><span word="But">But</span> <span word="within">within</span> <span word="minutes">minutes</span> <span word="it">it</span> <span word="has">has</span> <span word="been">been</span> <span word="knocked">knocked</span> <span word="into">into</span> <span word="the">the</span> <span word="water">water</span> <span word="in">in</span> <span word="a">a</span> <span word="clever">clever</span> <span word="team">team</span> <span word="tactic">tactic</span> <span word="before">before</span> <span word="being">being</span> <span word="killed">killed</span>.</p><p>但是几分钟之内，被杀之前，他就会按照一定次序进入水中。</p><p><span word="These">These</span> <span word="astonishing">astonishing</span> <span word="pictures">pictures</span> <span word="show">show</span> <span word="how">how</span> <span word="the">the</span> <span word="sea">sea</span> <span word="predators">predators</span> <span word="work">work</span> <span word="together">together</span> - <span word="and">and</span> <span word="the">the</span> <span word="technique">technique</span> <span word="provides">provides</span> <span word="meals">meals</span> <span word="for">for</span> <span word="killer">killer</span> <span word="whales">whales</span> <span word="three">three</span> <span word="out">out</span> <span word="of">of</span> <span word="every">every</span> <span word="four">four</span> <span word="times">times</span> <span word="they">they</span> <span word="use">use</span> <span word="it">it</span>, <span word="according">according</span> <span word="to">to</span> <span word="scientists">scientists</span>.</p><p>这一系列让人吃惊的图片都展示了海洋捕食者是怎样合作的，而据科学家们书，虎鲸每顿饭都要用三四次这样的方法进行捕食。</p><p><span word="Research">Research</span> <span word="has">has</span> <span word="also">also</span> <span word="found">found</span> <span word="that">that</span> <span word="the">the</span> <span word="mammals">mammals</span> - <span word="around">around</span> 26<span word="ft">ft</span> <span word="in">in</span> <span word="length">length</span> <span word="and">and</span> <span word="weighing">weighing</span> <span word="more">more</span> <span word="than">than</span> <span word="six">six</span> <span word="tonnes">tonnes</span> - <span word="carefully">carefully</span> <span word="butcher">butcher</span> <span word="the">the</span> <span word="prey">prey</span> <span word="underwater">underwater</span>, <span word="co">co</span>-<span word="operating">operating</span> <span word="as">as</span> <span word="they">they</span> <span word="skin">skin</span> <span word="and">and</span> <span word="dissect">dissect</span> <span word="the">the</span> <span word="seals">seals</span>.</p><p>研究还发现这种重达六吨的哺乳类动物，在水底捕食海豹的时候，也会互相合作。</p><p><span word="Dr">Dr</span> <span word="Robert">Robert</span> <span word="Pitman">Pitman</span>, <span word="a">a</span> <span word="marine">marine</span> <span word="scientist">scientist</span> <span word="at">at</span> <span word="the">the</span> <span word="National">National</span> <span word="Oceanic">Oceanic</span> <span word="and">and</span> <span word="Atmospheric">Atmospheric</span> <span word="Administration">Administration</span> <span word="in">in</span> <span word="California">California</span>, <span word="took">took</span> <span word="the">the</span> <span word="stunning">stunning</span> <span word="images">images</span> <span word="of">of</span> <span word="the">the</span> <span word="pod">pod</span> <span word="going">going</span> <span word="in">in</span> <span word="for">for</span> <span word="the">the</span> <span word="kill">kill</span>.</p><p>在加利福尼亚州国家海洋和大气管理局的海洋科学家罗伯特·皮特曼博士，拍到了这群动物如何一起进行猎杀的图片。</p>
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