Answer:
Big as a biscuit, deep as a cup, but even a river canβt fill it up. What is it?
A caribbean shape that makes ships disappear
I fly through the air on small feathered wings, seeking out life and destroying all things.
What measures out time until in time all is smashed to it?
What hangs others yet can unintentionally hang itself?
It weighs next to nothing but no one can hold it for long. What is it?