Disturb it and it only retreats a little distance. 它受到惊动就会稍稍后撤
Go after it, and it has a special defense. 如果继续惊动它,就会看到它的特别防御
and nothing can afford to waste any energy. 一点能量都不能浪费
A sawtooth eel hangs upright and motionless. 一条锯齿鳗笔直向上, 静静地挂在水里
a small relative of shrimps and crabs. 与虾和螃蟹有一定的亲戚关系
Eight meters across and weighing over two tons. 8米宽,超过2吨重
Dawn returns, and the plankton sinks back into the depths. 黎明到来,浮游生物又回到深海
Deep water plankton start to rise from the depths and another hungry army prepares to receive it. 深海的浮游生物开始浮上水面, 另一支饥饿的部队准备接受这些猎物
and the dolphins block the baitball's retreat. 海豚们锁定了从海面撤退的鱼群
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.