and, at last, the mackerel sink below the diving range of the birds. 最后,竹荚鲭也逃出了猛鹱的攻击范围.
They drive the fish upwards, trapping them against the surface 它们将鱼儿赶上海面,目的是诱捕它们
Cory's shearwaters. They're waiting for the dolphin to drive the prey closer to the surface. 猛鹱 正在等着海豚把猎物赶上水面
Now the shearwaters can dive down on them, descending to twenty meters or more 猛鹱出动了 它们可以潜至20米甚至更深来捉鱼
It's difficult for a single dolphin to catch the fish. 单只海豚想吃它们是很困难的
To avoid wasting energy the work as a group. 为了避免浪费精力,它们进行团队合作
The news has spread. Now a number of schools are on their way. 消息传开,大量的真海豚上路了
They're heading towards the Azores volcanic islands a thousand miles west of Portugal. 它们向亚速尔游去 葡萄牙以西1000英里的火山群岛
The dolphin scan the water ahead with their sonar. 海豚利用声纳扫描大海