Answer:
What gets wetter and wetter the more it dries?
The more you look at it, The less you see.
I am the yellow hem of the sea's blue skirt.
What travels from coast to coast without ever moving?
What has to be broken before you can use it?
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.