Book design for David Doubilet: Two Worlds: Above and Below the Sea. Spotlighting a stunning selection of images from Doubilet's 50-year career, spanning the Galapagos to the Red Sea, the icy waters of the Antarctic Ocean to the tropical Great Barrier Reef, this body of work raises important questions about conservation and global warming. Essays by Kathleen F. Moran and Kathryn D. Sullivan.