Brad Matsen is the author of Descent: The Heroic Discovery of the Abyss (Pantheon), as well as many other books about the sea and its inhabitants. He was a creative producer for the television series The Shape of Life, and his articles have appeared in Mother Jones, Audubon, and Nature. He divides his time between Seattle and New York City. John Chatteron and Richie Kohler contributed to the research of Titanic's Last Secrets, as they did for Robert Kurson's Shadow Divers, the 2005 Book Sense Nonfiction Book of the Year.