There is 3000 toms/mt pressure under 3000 metres depth.
I have no idea what you are trying to say there.
There are no such units as toms or mt.
At 3000 m, the pressure would be roughly 300 bar.
But so what?
Why would that magically mean you can't breathe?
I think I mean opposite of your saying.
So you mean the complete opposite of reality?
There is no reason for those high pressures to prevent people from breathing, nor does it make aquatic life impossible.
How again?
I already explained, but you ignored it because it so easily shows you are wrong.
Inflate the balloon above the water.
Then take it under water.
You will observe that as you go deeper and deeper the pressure of the water will crush the balloon until the pressure is roughly equal, reducing the size of the balloon.
If you go down 10 m the balloon will reduce to roughly 1/2 of its original volume.
If you go down 20 m, the balloon will be roughly 1/3 of its original volume.
And so on.
If there was no pressure gradient the balloon would remain the same size.
Simple baloon experiment proves you are wrong. Because baloon beats the so called gravity.
No it doesn't, as already explained to you.
A helium filled balloon is indirectly pushed up by gravity due to buoyancy.
Gravity creates a pressure gradient in any fluid, which results in an upwards force proportional to the volume displaced and the density of the fluid.
A helium filled balloon rising is 100% consistent with gravity.
This is even demonstrated better with vacuum chambers where the density of the surrounding air drops enough so the buoyant force can no longer lift the balloon.
Watch how an anaconda kills animals.
In a way fundamentally different to pressure.
Notice how the constrictor is only squeezing on the sides of the animal.
This is vastly different to hydrostatic pressure from a fluid.
This hydrostatic pressure presses in all directions.
The other key issue is the pressure of the air.
The animal can't breathe because of the air is not great enough to overcome the force of the constrictor pushing against it.
It is because of the massive pressure differential, where the pressure on the outside of the lungs is much larger than the pressure inside so it can't inflate.
If you instead applied that same pressure, but also had pressurised air, you would be just fine, because you remove the massive pressure differential.
So it isn't the pressure that is the problem, it is the pressure differential across the wall of the lung.
Since I have proved pressure diagram is a lie
You have proven no such thing.
Your strawman comparison doesn't help your case.
And again you just ignore what clearly shows you to be wrong where you can't lie your way out.
Why are you so afraid of reality?
Why do you need to reject it so much to try and prop up your nonsense?
Here it is again:
Do you know what the bends are?
It is from people breathing at high pressures, creating a larger amount of dissolved gasses in their blood, then coming up to the surface too quickly, where the pressure drops and lowers the solubility of the gas in your blood, causing gas bubbles to form.
This shows that not only can you breathe at high pressures, but that rapidly changing pressure can cause serious issues and the deeper you are the higher the pressure.
If you need a summary:
Pressure gradients exist in fluids.
This is substantiated by plenty of evidence, including deep sea fish which need the pressure to live, balloons which you can easily take down, even a long straw to the surface which you can't breathe through (akin to a constrictor crushing your chest), while you can breathe from a pressurised gas tank, actual pressure gauges to directly measure it, and the buoyant force, which results from this pressure gradient.
This is refuted by absolutely nothing.
Now care to actually address this very real pressure gradient rather than just lying to try and dismiss it?