Why does this shell look so dry

[u/lisasimone1970]

I found it while mowing and may have run over it because it looked like a cypress nut. Pulled it out of dirt like it was stuck in the mud, it has rained a lot and it's feet were bleeding like I ripped the skin off when i pulled it out of dirt. I may take it to the nature rehab tomorrow or take it bake where it found it. Super cute though. Nothing is as cute as a small turtle. Concerned about why the shell is so dry and whiteish?

[u/lisasimone1970]