“For 396 days, I followed the course of the Amazon River and myriads of tributaries from across South America, from the Andes in the west to the Atlantic in the east,” shares thomaspeschak. "I spent most of my time below the river’s surface, revealing a rarely glimpsed underworld." The photographer and #NatGeoExplorer spent more than a year immersed in the Amazon River Basin with fellow Explorers and local communities to create a first-of-its-kind comprehensive visual documentation of the aquatic and wetland habitats of the Amazon rainforest. In his new book, Amazon: A River's Journey From the Andes to the Atlantic, Peschak captures astonishing biodiversity, novel wildlife behavior and unique ecologies of rarely glimpsed species. His work is part of the National Geographic and Rolex #PerpetualPlanet Amazon Expedition, showcasing the solutions, science and communities working to secure the future of the Amazon.