Authorities also plan to conduct an aerial survey to determine whether there are any other whales in the area.

当局还计划进行空中调查，以确定该地区是否还有其他鲸鱼。

During an aerial survey of the area, scientists observed rings that nestled inside each other, and that these rings often merged.

在对该地区进行空中勘测时，科学家们观察到环状物相互依偎在一起，而且这些环状物经常合并。