Answer:
I shift around though always slowly. I never move more than a few inches at a time. A large movement by me can kill many people. I am huge yet unseen by humans.
I have branches but no fruit trunk or leaves. What am I?
I cannot be burned in fire or drowned in water
I sit high glowing and watch the world go by. Without me everything would seem dull and dangerous. What am I?
I am a ship that can be made to ride the greatest waves. I am not built by tool, but built by hearts and minds. What am I?
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it, can't see it. What is it?