Answer:
What can be swallowed, but can swallow you?
It is the assumed nocturnal symbol of Mr. Wayne. What is it?
What does no man want, yet no man want to lose?
Round like a dishpan and smaller than a bathtub. But the ocean can't fill it. What is it?
A beacon from home to guide your way. It can be a lifesaver on a stormy day. What is it?
The more of me you take, the more I appear behind you. What am I?