In the Brazilian Amazon, a significant problem emerged last week. Over 100 dolphins were found dead in Lake Tefé due to limited rainfall and exceptionally hot water, reaching over 102 degrees Fahrenheit in some areas. Scientists from the Mamirauá Institute, supported by the Brazilian Ministry of Science, believe these conditions caused the dolphin deaths, raising concerns about the Amazon’s future and human impact. The Amazon River, the world’s largest, is currently in its dry season, compounding the challenges for its wildlife. Efforts are underway to relocate surviving dolphins to cooler river areas, though the distance makes this task difficult.

André Coelho, who works at the Mamirauá Institute, said they need to check if the dolphins have any toxins or viruses before putting them in different rivers, which can be dangerous. The drought is also hurting the local economy because many towns in Amazonas State can’t use the river for transportation or fishing. CNN Brasil says that there might be even worse droughts coming soon, which could make more dolphins die.