SO that would means that if i dig a hole down and go down it, I could float because I press the air below me but leaves space above me. Right?
I'm going to try and be very patient with you and give you the benefit of the doubt on your naivety. All I ask is that you observe what I'm typing and absorb it.
If you dig a hole and go down it, what follows you?
I'll make this a shit load simpler.
If you were in a sink in a little diving suit and that sink was full of water. And just say...I mean, JUST SAY....imagine that this sink was made of MUD and that the water was simply the ATMOSPHERE.
Now can I trust you to imagine this? I'll carry on in the hope that you will.
Ok, now you dig a hole on the bottom of your sink. You dig it as deep as your height, for instance.
Ok, now where is the water?
Is it in your dug hole? it is, right?...why?
Because the pressure of it fills whatever you open up for it. Now if that was a metal box and you opened the box, it would fill the box, too.
Now imagine that same box before it was filled. Imagine trying to open that lid. That lid would be hard to open because the water/atmospheric pressure is applying pressure to it and that box and lid is resisting it, meaning you cannot open it easily with your energy.
Once you do, the water/atmosphere will fill that box very quickly, leaving only the box's skin density acting against the water/atmosphere.
Now get your head around this and please read this as well.
Please do not come out with, " yeah but water makes us buoyant and we act differently in water."If you come out with something like this then I'm wasting my time explaining to you.