Yeah, way to think like a Rescue Hero. I'll just dive into the open ocean wearing a fireman's uniform. Way to die.
Oh, no. He can swim quite easily, carrying someone else with him, even though he's wearing that heavy fire-shielding stuff. Fucking hell, at least Dragonball is consciously stupid, though I suppose you can't expect much from a show that has characters like 'Roger Houston, the guy in outer space' and 'Jake Justice, the policeman'. Only fifteen minutes of this crap left.