If car did hold it’s form, and no air exited and no water entered, the pressure would be surface-level pressure.
50 ft of water is about 22 psi or 1.5 bar. If you did breathe air that had equalized at 50 ft of water, there is a possibility of bends, but usually for dives that shallow, time duration is a big factor. So don’t sight-see.
It would be bad to not let any air escape your lungs during assent. But holding your breathe for the initial shock of all that water pressure crushing you is more important than some lingering idea in the back of your mind that holding your breathe too tight will get you a case of the bends.
I came to mention this is only a thing if you getting your air while underwater and was a bit sad to see someone already got to it and then a bit amused that the person argued it a bit.
If car did hold it’s form, and no air exited and no water entered, the pressure would be surface-level pressure.
50 ft of water is about 22 psi or 1.5 bar. If you did breathe air that had equalized at 50 ft of water, there is a possibility of bends, but usually for dives that shallow, time duration is a big factor. So don’t sight-see.
It would be bad to not let any air escape your lungs during assent. But holding your breathe for the initial shock of all that water pressure crushing you is more important than some lingering idea in the back of your mind that holding your breathe too tight will get you a case of the bends.
I came to mention this is only a thing if you getting your air while underwater and was a bit sad to see someone already got to it and then a bit amused that the person argued it a bit.