“Aquaman”? No.

“Mission Impossible”? Yeah.

Depends entirely on how likely I think it is to be in any way realistic. Often I might check the time they’re underwater. 1-2min is still realistic, although very challenging for an average non-trained person. You can quite quickly train yourself up to a few minutes, some dude on YT tried went from 30s to about 4min.

However it’s usually reliant on conserving oxygen, having a low pulse and no adrenaline etc. Quite the opposite of what is usually going on in movies like MI.

I too sometimes check the time to see if it is realistic, since the only character with a real chance of surviving underwater is Guybrush Threepwood. It kind of looks implausible in every action movie, though

FYI: new World Record for holding breath under water is 29+ minutes.

I’m sure he had zero activity during that effort.