Answer:
What can be underwater, under fire, on fire and taking water all at the same time?
You heart it speak, for it has a hard tongue. But it cannot breathe, for it has not a lung.
I'm white, I'm round, but not always around. Sometimes you see me, sometimes you don't.
I am nothing really at all, Yet I am easily foundΝΎ Ignore me at your own peril, and you might end up crowned!
What goes with a car, comes with a car, is no use to a car but a car cannot move without it?
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.