Why Am I Dry Underwater?

[sugarini.livejournal.com]

 I know it's not abnormal, but I want to know why the vulva is dry when underwater. It's not like I can't get wet when I'm taking a shower, but have you ever touched your genitals while taking a bath, or in the pool, or in the ocean? Completely dry. It's not uncomfortable, and it's not as if I get a yeast infection or I itch after. I would just like to know...why?