一种掠食动物经常大量捕食单单一种猎物时，这两个物种是紧密联系的。
When a predator always eats huge numbers of a single prey, the two species are strongly linked.
“这限制了能量向食物链上层传递，因为其他掠食动物少有以水母为食。”康登说。
restricts the transfer of energy up the food chain because jellyfishare not readily consumed by other predators," said Condon.
内尔万人社会中，最强壮的男性充当武装哨兵，负责打猎，并保护村庄免受掠食动物的侵扰。
In Nelvaanian society, the fittest males become warrior scouts, hunting game for food and protecting the village from encroaching predators.
凶猛的超级大鱼有效运用演进赋予的致命武器，让它们可以电击，螫刺或切割掠食动物或猎物。
Watch as fearless fishermen confront the deadly weapons of monster fish wielding evolution's deadliest arsenals they shock, sting, stun and slice.
当我们谈到黑色的美洲狮，其他人想到的是掠食动物，然而我们想到的是建筑中未被训服的危险。
When we speak of black panthers, the others think of predatory animals. We, however, think of the untamed dangerousness of architecture.
这种掠食动物发现于23678英尺(7217米)的深度。在此之前，科学家们认为这样的深度中栉水母无法生存。
This predatory species was found at 23, 678 feet (7, 217 meters), where scientists had previously thought it was impossible to support such life.
研究者总结到，小型的肉食动物在猎物速度较快的环境下占有优势，而大型掠食动物则猎物体型较大，速度较慢的环境下具有优势。
The researchers conclude that smaller carnivores would have had an advantage in environments with predominantly fast prey, and bigger ones where prey was slower and larger.
作为最残忍的掠食者之一，虎鲸可能不符合文明动物的形象。
As one of the most brutal predators, killer whales may not fit the image of a cultured creature.
设想一只动物，它必须去觅食，但同时也不得不保护自己免受掠食者的攻击。
Think about an animal. It has to get food, but at the same time it has to protect itself from predators.
那儿的海鸟对动物的掠食行为毫无防备，所以老鼠们轻而易举地就走进了海鸟的巢穴并开始进食它们的幼崽。
The seabirds there have no defences against predation, so the mouse simply walks into their nests and starts eating the chicks alive.
尽管哪些物种是捕食者，而哪些物种又是被掠食者显而易见，但是让多种类型的肉食性动物共存的摄食习性的微妙法门却很少在化石记录中保存下来。
Though it is obvious which species were predators and which prey, the subtle specialisations of feeding habit that allow many types of carnivore to co-exist are rarely preserved in the fossil record.
超级鳄有可能因为太重而不善于奔跑，因而它可能会潜伏在水底，掠食甚至更大的动物。
And SuperCroc, which was probably too heavy to run, and which probably lurked at the water's edge, could have taken even bigger ones.
这只巨塔般的掠食者，以及象目的恐象，是地球上曾经存在的最大的哺乳动物。
This towering plant eater, along with Deinotherium — a member of the order elephants belong to — were the largest mammals to ever walk the earth.
事实上，一些裸鳃类动物因吃了有毒海绵也带有了毒素，使得像这种鼻涕虫的生物它们自己也对掠食者会造成致命的毒害。
And indeed, some nudibranches store up toxins from their diet of poisonous sponges, making the slug-like creatures themselves deadly to predators.
如果有必要，现代鳄鱼可以掠食比自己身体大三倍的动物。
"Modern crocs can take prey three times their size, if necessary," says Sereno - which means that the 20-ft.-long.
海洋掠食者沉浸到大海深处在我们的海洋中最危险的食肉动物搜索。
Ocean predators Immerse yourself deep into the ocean in search of the most dangerous predators in our seas.
我们现在知道它的长腿使之成为顶级掠食者，这种哺乳动物能够长距离追逐猎物，特别是野牛。
We now know that its long legs made it a top predator, a mammal that could run down its prey at long distances, particularly, bison.
有争议的动物园允许游客有极为密切的接触一些最危险的掠食者在这个星球上。
The controversial zoo allows tourists to have extremely close encounters with some of the most dangerous predators on the planet.
早期的人类大多死于掠食，但是随着财物的出现，我们开始生存的时间更长。 但是死于能够传染给我们所养殖的动物的疾病。
The early humans mostly died of predation but as soon as settlements sprang up we started living longer but dying of the diseases that affect our farmed animals "said kellehear."
竞争者和动物天敌通常也不会到达这个小岛，但是深海的竞争和掠食却很猛烈。
Also, the competitors and predators of a species often don't reach an island, but competition and predation in the deep sea can be intense.
竞争者和动物天敌通常也不会到达这个小岛，但是深海的竞争和掠食却很猛烈。
Also, the competitors and predators of a species often don't reach an island, but competition and predation in the deep sea can be intense.
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