Answer:
It's been around for millions of years, but is never more than a month old. What is it?
Through its wounds, water does run. It once held many but now has none. What is it?
I am round as a bowl, deep as a tub, but all the world's water couldn't fill me up.
Inside a great blue castle lives a shy young maid. She blushes in the morning and comes not out at night.
I have it, I donβt share it. If I share it, I donβt have it. What is it?
I stay where I am when I go off. What am I?