A boy playing on a New Jersey beach has unearthed a 10,000-year-old arrowhead possibly used by ancient Native Americans to spear fish or hunt mastodon. Ten-year-old Noah Cordle and his family were vacationing on the Long Beach Island last week when he found it at the edge of the surf in the community of Beach Haven. It was sharp enough that it hurt as it hit his leg. He thought it was a crab until he picked up the object. The Springfield, Virginia family contacted the Archaeological Society of New Jersey to check it out.