Dolphins are some of the world’s most beloved animals– these intelligent, social sea mammals are popular in zoos and aquariums. Most of the dolphins in zoos are sleek, gray bottlenose dolphins, the most common members of the dolphin family. But there are dozens of species of dolphins– they come in all shapes and sizes. The world’s smallest dolphins are Maui dolphins, also known as popoto, which only reach five and half feet long and a 120 pounds. The world’s biggest dolphins are killer whales, which can reach over thirty feet in length. (Fun fact: all dolphins are technically whales.)

Dolphins don’t just come in gray, too. Dolphins can have a wide range of black and white markings, and some dolphins, like the ones in the Amazon River, are pink!

Photo by Jorge Andrade