Answer:
You eat something you neither plant nor plow. It is the son of water, but if water touches it, it dies.
They made me a mouth, but didn't give me breath. Water gives me life, but the sun brings me death.
I hide but my head is outside.
You can always see it, but it's too far away to touch. Mountains rest on it, and at sea it surrounds you. What is it?
Though I have neither legs nor feet, my use is for to go; Although I cannot speak, I tell what others want to know
The warmer I am the fresher I am.