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。

Outer-coast transients appear to have developed specialised strategies-such as the repeated battering and drowning of grey whale calves-because their prey is bigger and takes more time to subdue.

外海岸过客鲸似乎有了专门的捕猎策略，比如反复击打和淹死灰鲸幼崽，因为它们的猎物更大，需要更多时间来制服。