Susan Casey is the editor in chief of O, The Oprah Magazine. She is the former editor in chief of Sports Illustrated Women and former development editor of Time Inc. She is a National Magazine Award-winning journalist. Her work has appeared in numerous publications including Esquire, Sports Illustrated, Fortune, Outside, and National Geographic. She has written several books including The Devil's Teeth: A True Story of Obsession and Survival Among America's Great White Sharks and Voices in the Ocean: A Journey into the Wild and Haunting World of Dolphins.