You don't need any great conspiracy theory about sentient animals plotting to reclaim the seas from humanity - from what I read, modern engine-powered ships cause a lot of noise pollution which directly affects marine animals like whales.
So I'm somewhat surprised they don't try to attack the things that all the annoying noise is coming from.
This would make sense if the Orcas hadn't been repeatedly recorded attacking sailing yachts, which make no noise at all since they're sailing :)
Also, even when sailing yachts use their engine, it's not exactly a big and powerful noisy engine like a tanker or cruise liner. Yet, we have seen more videos of orcas attacking 10 person or smaller sailing yachts than bigger, noisier ships.
So I'm somewhat surprised they don't try to attack the things that all the annoying noise is coming from.