Otters have also joined the fight but in a smaller scale. I vote for underwater uprising.

https://www.npr.org/2023/07/13/1187295769/otter-santa-cruz-surfboard-surfers-california?utm_medium=JSONFeed&utm_campaign=news&utm_source=press.coop

Well yeah that is what I was talking about, though the articles I saw didn‘t mention any reason at all and if they had said "shits and giggles" I‘d be even more sceptical of that, since I don‘t think animals really fight without a reason.

Now here is where we get to my wild conspiracy theory, I think aquatic species may not like boats, who they can see killing their species or hunting their food sources. Then they react to a predator, so either they flee or attack. Orcas being some of the bigger ones are probably the few who stand any chance whatsoever fighting, so they might try sometimes.

Edit: Ok I just googled around and saw the articles you mentioned saying they do it for fun, I also found this: https://www.theguardian.com/environment/2023/jul/11/the-orca-uprising-whales-are-ramming-boats-but-are-they-inspired-by-revenge-grief-or-memory

Which made me feel a bit more like at least I‘m not the only one who sees this possibility and also gave me more of an idea of why I might want to see this so much (I think there is an injustice happening).