This is interesting. You feel gravity less when you are in fluids. Does this mean all babies feel gravity differently because we all experience different amounts of fluid in the womb (not to mention the variations in baby sizes)? The impact is probably miniscule but I wonder if it has any effect on development of babies in the womb.
I guess you feel it less only because the support (pressure) is distributed more evenly along your skin. Inside your body, almost everything is fluid, so there it does not matter much, I'd say.