STORY: The remains of rare baby river dolphins have been washing up on the shores of Brazil's Lake Tefe in recent weeks. The Amazon rainforest is experiencing its worst drought on record and seeing ...

The carcasses of around 200 river dolphins were floating across the seven-foot (two-meter) deep waters of Lake Tefé, as a ...

A dolphin was captured on camera urinating into the air as another dolphin swims nearby in a rare occurrence that has left researchers and viewers bewildered. The newly resurfaced footage, originally ...

Bones from an Amazon pink river dolphin are embedded in dried mud along the banks of Lake Tefé in Tefe, Brazil, on Oct. 31, 2023. More than 200 river dolphins died in the 2023 drought that sent water ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

TEFÉ, Brazil — Each morning for the last several weeks, researcher Miriam Marmontel has gazed out at Lake Tefé and the Amazon River, through a thick curtain of smoke from thousands of wildfires raging ...