Answer:
What happens when you throw a green stone into the Red Sea?
I have skin, more eyes than one. I can be very nice when I am done. What am I?
What force and strength cannot get through, I with my unique teeth can do. What am I?
I see what you see feel what you feel and hear what you hear. I know all of your moves before you make them. I even know the moves you didn't make.
I'm really blue but when you see me I'm red. You don't see me too often. I'm there for you if you're hurt.
No matter how little or how much you use me, you change me every month.