Answer:
Pregnant every time you see her, yet she never will give birth.
The moon is my father. The sea is my mother. I have a million brothers. I die when I reach land
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.
You get many of me, but never enough. After the last one, your life soon will snuff. You may have one of me but one day a year, When the last one is gone, your life disappears.
What can run but canβt walk?
I am your mother's brother's only brother in law. Who am I?