Dolphins work together to catch prey. Dolphin pods will swim circles around a school of fish until the fish are tightly packed together.

海豚协同合作捕捉猎物。海豚小队会围绕游圈，直到被紧紧包围在起。

This one named Wellington made a beeline to the fish.

这只叫惠灵顿的企鹅径直走向了。

But when reefs are bleached or damaged, the fish flee, and the reef suffers.

但当珊瑚礁白化或受损后，会逃走，礁石也会遭受破坏。

Scientists can't say for sure if the fish that the noises attracted actually stuck around.

家无法确定噪音所吸引的是否会逗留。

There might be a big one around that school, he thought.

那个周围很可能有条大的，他想。

At such a low temperature, fish keep still.

这样的低温中，会聚集不动。

With experience, and with improved apparatus, it is now possible not only to locate a shoal but to tell if it is herring, cod, or other well-known fish, by the pattern of its echo.

根据经验和改进了的仪器，不仅能够确定的位置，而且可以根据回声的特点分辨出是鲱、鳕，这是人们所熟悉的其他。

Although these populations might be able to adapt by shifting their spawning grounds northward.

尽管这些可以通过将产卵地向北迁移来适应这变化。

Oil-rig reefs may shelter and feed up to eight tonnes of fish.

石油钻塔珊瑚礁可以给高达8吨的提供庇护以及食物。

A shoal of fish will do this.

也反射声音。

Most recently, he has modelled the behaviour of shoals of fish.

最近，他建立了行为模型。

Future numbers of the fish will drop to dangerously low levels.

未来数量将降至危险水平。

The number of fish in the sea has dropped by 50% since 1970s.

自 1970 年以来，海里的的数量已经下降了 50%。

Fredric Manach said this method uses two-kilometer-long nets that surround whole schools of fish.

弗雷德里克·马纳赫说，这种方法使用两公里长的网来包围整个。

Many fish that depend on phytoplankton swam away from the area.

以浮游生物为食的大量离开海域。

That way, the fish do not travel through unhealthy waterways.

这样，就不必通过不友好的水路。

It's these shoals that support most of the world's sea mammals.

也养育了世界上大多数海洋哺乳动物。

They followed the fish up a staircase, which opened into a grand ballroom.

他们跟游向通往大宴会厅的楼梯。

Physics professor Matthew Turner said what works in the air could work in the water.

物理家教授马修·特纳称鸟类的这种特性在海中的也同样拥有。

Once the catch is concentrated, the net is released from its anchor points.

旦集中了，他们就会将网从固定点松开。