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edited to add sources
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threetimes
threetimes
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Like the other answer, in part I am sure it is literally that amniotic fluid is not water. Your hands will not wrinkle in all fluids, they do in some fluids. I also don't even know if they would absorb water that early even if exposed. You are covered in vernix at birth, and it's waxy & protective. That alone would likely act as a water barrier. You will also notice in wrinkling it's only in the hands & feet. That type of wrinkling is intended to improve traction on slippery surfaces. You don't wrinkle everywhere when submerged, only in the areas where it may benefit you to do so.

Vernix: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2763724/

Info on traction created by skin wrinkles http://www.sciencemag.org/news/2013/01/wrinkles-help-fingers-get-grip

Like the other answer, in part I am sure it is literally that amniotic fluid is not water. Your hands will not wrinkle in all fluids, they do in some fluids. I also don't even know if they would absorb water that early even if exposed. You are covered in vernix at birth, and it's waxy & protective. That alone would likely act as a water barrier. You will also notice in wrinkling it's only in the hands & feet. That type of wrinkling is intended to improve traction on slippery surfaces. You don't wrinkle everywhere when submerged, only in the areas where it may benefit you to do so.

Like the other answer, in part I am sure it is literally that amniotic fluid is not water. Your hands will not wrinkle in all fluids, they do in some fluids. I also don't even know if they would absorb water that early even if exposed. You are covered in vernix at birth, and it's waxy & protective. That alone would likely act as a water barrier. You will also notice in wrinkling it's only in the hands & feet. That type of wrinkling is intended to improve traction on slippery surfaces. You don't wrinkle everywhere when submerged, only in the areas where it may benefit you to do so.

Vernix: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2763724/

Info on traction created by skin wrinkles http://www.sciencemag.org/news/2013/01/wrinkles-help-fingers-get-grip

Notice added Needs citation by michaelpri
Source Link
threetimes
threetimes
  • 482
  • 2
  • 6

Like the other answer, in part I am sure it is literally that amniotic fluid is not water. Your hands will not wrinkle in all fluids, they do in some fluids. I also don't even know if they would absorb water that early even if exposed. You are covered in vernix at birth, and it's waxy & protective. That alone would likely act as a water barrier. You will also notice in wrinkling it's only in the hands & feet. That type of wrinkling is intended to improve traction on slippery surfaces. You don't wrinkle everywhere when submerged, only in the areas where it may benefit you to do so.