When hunting grey whales, they target mother and calf pairs, chasing them until the calves begin to tire.

虎鲸在捕猎灰鲸时会瞄准母鲸和幼鲸，追逐它们直到幼鲸开始疲倦。

At that point the killer whales separate the grey whales by manoeuvring between them or dragging the calves away by their tail flukes or fins.

此时，虎鲸会在灰鲸之间移动或抓住幼鲸的尾鳍将幼鲸拖走，从而将它们分开。