Answer:
I start with T end with T and within me is T.
Face with a tree skin like the sea. A great beast I am. Yet vermin frightens me.
My teeth help me suck.
I am tomorrow's yesterday and yesterday's tomorrow. What am I?
What is the edge of earth and bread?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.