Answer:
What breaks in the water but never on land?
Sometimes it's silver but also gold. Printed on paper it's a treasure to hold. What is it?
Can you think of a crime that is punishable if attempted but not punishable if actually committed?
Angels and pilots earn these.
They are the shore's gallant knights.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.