Answer:
The more you have me the less you see. Shine a light on me and I shall flee.
A caribbean shape that makes ships disappear.
I fill a room but take no space.
Against the sun I protect your eyes and am often worn on the face of spies
I flow from the Homerβs mouth when he sees doughnuts.
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.