Rare Pink Dolphin Now Tracked in Bolivia

The World Wildlife Foundation says little is known about pink river dolphins, but researchers recently had an up-close encounter in Santa Cruz, Bolivia. A pair of the mammals were found in shallow waters. Veterinarians gave them a check-up, and they were both fitted with a WWF tracker before they were released back to the wild. Pink river dolphins can grow to over 8 feet long and, while in captivity, the species has lived to be about 30 years old.