His face looks like he just became curious about something.

they dont think like that though its not only theme parks its also the fact on there's more and more humans every year which means we need more food meaning fish is an option so we fish taking their food so that's part of it

Orcas have such brute strength that it’s no surprise that the rudder broke of because they can take on sharks.

I think it's because the people are taking their food (Don't believe me? It says "I saw them [orcas] look at boats carrying fish. I think they know that humans are somehow related to food shortages.") Or it could be because they are trying to protect their territory