Amazon

Amazon River Dolphins in Decline
Amazon River Dolphins in Decline

Those who explore the waters of the Amazon basin occasionally hear a forceful snort, the sound that a pink river dolphin or boto makes when it surfaces to exhale. Visitors sometimes catch a glimpse of a pinkish, rounded forehead or small dorsal fin just above the surface. That’s likely all they’ll get, though. Not only are these freshwater dolphins relatively shy, but their numbers have also drastically declined in recent years.