The Amazon River dolphin, which is also known as the boto or pink river dolphin, is estimated to number in the tens of thousands, according to the World Wildlife Fund. However, the pink river dolphin is still classified ... More »

Pink dolphins live in the Amazon, Araguaia and Orinoco river systems in South America. The dolphins, also known as Amazon river dolphins, live in portions of the river systems that pass through Bolivia, Brazil, Columbia,... More »

Dolphins are very smart and playful animals. Although they live in the water, dolphins are mammals just like humans and need air to breathe, which they do out of a blowhole on the top of their heads. In fact, dolphins ca... More »

www.reference.com Pets & Animals Marine Life

The World Wildlife Fund considers sea lions an endangered species. This classification indicates that a species of animals has a high risk of total extinction in the wild. Conservation efforts concerned with endangered a... More »

www.reference.com Pets & Animals Marine Life

Dolphins are mammals found in the sea and are part of the toothed whale family. They are grey with backs that are darker than the rest of their bodies. More »

Dolphins hear when the sounds in the water bounce off the dolphin's jaw bone into the middle ear. Dolphins can hear far better than humans and their hearing is even better than that of dogs. More »

A group of dolphins is called a pod. Sometimes it is called a school of dolphins. The pod usually consists of around 12 to 200 dolphins. There are also super pods with thousands of dolphins, which are composed of a numbe... More »