Rigney is the author of In Pursuit of Giants: One Man’s Global Search for the Last of the Great Fish (Viking/Penguin, 2012). The book tells the story of Rigney’s five-year, 75,000-mile, ’round-the-world journey to encounter the great fish of the sea—marlin, bluefin tuna, and swordfish—and to explore the causes of their decline by more than 70 percent since 1950.