Over four years, a team from Canada’s CetAsia Research Group traveled to the Amazon river, where they then closely watched ...

There’s the South Asian river dolphin (Platanista genus) and the Amazon river dolphin (Inia genus ... seeking less competition for food. This Amazonian freshwater environment was nutrient ...

The fossilized skull of a now extinct giant river dolphin was discovered in the Amazon River ... groups that originally left oceans to find new food sources in freshwater rivers.” ...