Imagine boating down one of the longest rivers in the world , the Amazon River, minding your own business — calmly keeping an eye out for alarmingly large anacondas — when a curious, flamingo-pink dolphin appears. While they may seem like mythical creatures, pink Amazon river dolphins really do exist.

All About the Largest River Dolphin Species

The Amazon river dolphin ( Inia geoffrensis ), also known as a boto , is the largest species among river dolphins. It can measure up to 8 feet (2.4 meters) long and weigh around 450 pounds (204 kilograms) — as much as three full kegs of beer!

Size isn't the only thing that sets the Amazon river dolphin apart: This freshwater dolphin, which thrives in the Amazon and Orinoco river, is sometimes shockingly pink.

Although born grey, ad

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