Scroll-wise coiled forwards beneath the body, and then rapidly sprung backwards, it is this which gives that singular darting, leaping motion to the monster when furiously swimming.

它像卷轴一样在身体下面向前一卷，再迅速向后一弹，正是这个动作使得鲸鱼猛烈游动时有了种独特的一冲一跃的姿势。