Alessandra Korap Silva holds her mobile phone at eye-level, turns on the camera and waits. Suddenly, from the pond in front of her, a snout emerges and a large animal starts chewing on some leaves, floating on the surface. “It’s a manatee, I’ve never seen one of these before.” She begins filming and taking photos—“I have to share this with my tribe.” Ms. Korap Silva is a member of the Munduruku people, a group of tribes which live in the Tapajós region of the northern Brazilian state of Pará. She is one of the many indigenous people in the country...
