Random Riddle: Hard To Crack

I am not a human, nor am I an animal.
I have eyes, but cannot see,
and I have hair that you cannot comb.
My brown skin has several layers but this seems a paradox,
because one is smooth and the other is hard.
My skin protects my soft white flesh;
and within my flesh is my opaque blood.

What am I?
 

Random Riddle: Hard To Crack