Answer:
The more you take, the more you leave behind.
Once they sailed the sea, now they surf the web
I can be moved. I can be rolled. But nothing will I hold. I'm red and I'm blue, and I can be other colors too. Having no head, though similar in shape. I have no eyes - yet move all over the place.
When the son of the water returns to the parent, it dies. What is it?
I am free for the taking. Through all of your life, though given but once at birth. I am less than nothing in weight, but will fell the strongest of you if held.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.