It's not particularly harmful fwiw. A yacht sinking due to an orca would have sunk due to a strong wave.
Also it seems the orcas are bored.
If Hvaldimir is anything to go by a ball would be a good solution here.
Also it seems the orcas are bored.
If Hvaldimir is anything to go by a ball would be a good solution here.
Speculation among sailors is that "hey, did you know you can break bits off those things?" is as plausible an explanation as any.
There are known ways to scare orcas off but it's illegal to distress them and nobody really wants to. I certainly don't.