This is not quite Invasion of the Body Snatchers, and clearly it is unwise to talk as if the jellyfish had some kind of plan.

这绝不是《天外魔花》，显然，好像水母有某种计划似的谈论此事很不明智。

youdao

While they still risk losing a big catch, they can, at least, save their pricey nets from the invasion of the giant jellyfish.

CNN: Japanese fishermen brace for giant jellyfish