Answer:
Good memory, skin like the sea. A great beast I am, yet vermin frightens me. What am I?
I have cities with no people, forests with no trees, and oceans with no water. What am I?
I am the ultimate killing machine used not once but TWICE I can be made by humans.
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.
Santa shakes his belly like a bowl full of me
Pirates put their booty in it.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic