Damien Chevallier, a researcher of the French National Centre for Scientific Research (CNRS), installs a video camera on the shell of a leatherback sea turtle, also known as the Luth turtle, at the Saline Beach in Remire-Montjoly, French Guiana, on June 7, 2019, as part of a Greenpeace mission focused on turtles. (Photo by jody amiet / AFP)