Pink Amazon dolphins stayed behind in rivers when sea levels dropped millions of years ago. See how their bodies adapted to survive. | National Geographic

The Endangered Amazon River Dolphin is a freshwater species found in rivers of South America. These animals have a striking pink color, and use echolocation to navigate through dark or muddy waters. Help protect critical habitat for the Amazon River Dolphin and other threatened species in Bolivia. Donate now: https://bit.ly/4cip92D | Rainforest Trust