I wonder what fish and sharks think of whales and dolphins that have to surface to breath. I can totally see it "get out of here air breather, go hug the surface."
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...
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.
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.