Researchers from the University of Florida have uncovered the largest known nesting site for the threatened giant South American river turtle (Podocnemis expansa). The turtles were found gathered along the Amazon’s Guaporé River between Brazil and Bolivia. Also known as the Arrau turtle, these freshwater reptiles live in rivers and lakes along the Amazon and Orinoco River basins. Drone footage captures the turtles at their nesting site on the Guaporé River’s sandbanks between Brazil and Bolivia. The team plans to perfect their monitoring methods by conducting more drone flights at the Guaporé River nesting site and in other South American countries where the giant South American river turtles gather.