I bet most fish and sharks are like "oh fuck oh shit oh fuck" whenever they see whales and dolphins
When great whites detect orcas near California, they dive, and swim way over towards Hawaii as an example.
I think fish and sharks aren’t intelligent enough to realize that mammals have lungs. Orcas however are smart enough to know how to drown a great white shark.
The closest might be sharks hunting seals, since they'd have some understanding that seals go to the surface. They might not understand the breathing bit, more just location.
Orcas do something similar, and while that shows more of an understanding of the breathing (since they harass the prey to stop them from surfacing to breathe), but it doesn't fit the prompt since they're marine mammals too.
Generally it seems like the mammals are higher up in the pecking (flipper slapping?) order. So if there was a sense of superiority, it might be the other way around
Personally I try to avoid all of them and focus on my urchins...
Stupid cetacean! You’re just feeding into “Big Air”. Stop poisoning our water with your lies!!!!
Only humans hate others for being different. So no, I’d imagine they wouldn’t think anything like that at all. In fact, I’d bet they would be incredibly curious and ask tons of questions.
I know from experience dogs, cows and a lot of birds hate each other for being different, so this is nothing unique.
I think you're misinterpreting, I meant dogs of different breeds bring chill with an unknown dog of their own breed, while trying to get rid of dogs of a completely different breed, even if those have lived in the same neighbourhood for years.
Horses of different breeds in the same stable still have a hard time trusting each other, but not with one of their own breed, even if that's a visitor.
And so forth.
TL;DR humans aren't the only racist animals
If they were capable of thinking in that way, I imagine they'd just assume they were going up for hunting or warmth or something. Plenty of fish go near the surface, too. I imagine halibut don't think salmon are breathing when they go to the surface or jump out of the water.