Answer:
I am a desire to munch
Born in the ocean and white as snow. When I fall back to water I disappear without a trace.
When you stop and look, you can always see me. If you try to touch, you cannot feel me. I cannot move, but as you near me, I will move away from you. What am I?
People need me yet they give me away every day.
I am black within and red without With four corners round about.
Why did the teacher have to wear sunglasses?