00:00Your skin wrinkles underwater because blood vessels beneath the surface constrict in response to signals from the nervous system.
00:07Rather than simply absorbing water, this process, called vasoconstriction, reduces the volume under the skin, causing it to fold into
00:16wrinkles.
00:17The effect is most noticeable on fingers and toes due to their high nerve density and specialized structure.
00:23Wrinkling typically begins after a few minutes of exposure and becomes more pronounced over time.
00:28This response is considered an evolutionary adaptation that may improve grip in wet environments.
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