Answer:
I am whole but incomplete. I have no eyes, yet I see. You can see, and see right through me. My largest part is one fourth of what I once was.
I am mother and father, but never birth or nurse. I'm rarely still, but I never wander.
My first is a creature whose breeding is unclear. My second, a price you must pay. My whole can be found in the river of Time and refers to events of today.
Big as a biscuit, deep as a cup, but even a river canβt fill it up. What is it?
Don't do this in the shallow end.
Iβm grown from darkness but shine with a pale light. Very round I am and always a lady's delight.