In The Sea Hunters, his first nonfiction book, Cussler explores the special world of undersea adventure that inspired and has its fictional parallel in the Dirk Pitt novels. He describes his lifelong love for the sea and ships, and how his involvement with the search for John Paul Jones's famous Revolutionary War ship, the Bonhomme Richard, led to his establishing the NUMA (National Underwater and Marine Agency) Foundation, a nonprofit organization dedicated to the discovery…