Dolphins live in saltwater but they this is an internal link in freshwater locations. Only a handful of the species though are known to thrive in freshwater regions. They tend to stick to the shallow areas of the water found along the continental shelves.
Since wild dolphins catch and eat their food underwater and research is expensive and often hard to do, most of the data regarding their feeding habits has come from analyzing the contents of the stomachs of dead animals that wash up on the beach.
Dolphins, like almost all mammals, give birth to live young, and nurse them with mammary glands, though it boggles the mind to imagine nursing underwater. But the birth of a dolphin starts long before his babyhood; it starts with how Mom and Dad first met.
There are many telling signs that the dolphin is related to terrestrial origins. The fact that they need to come to the surface of the water to get air is the most dominant factor.
If you were to step out into the street and ask the first ten people you see whether or not they believed dolphins were creatures of intelligence, 8 of 10 would probably say yes.
Dolphins are not chicken of the sea; yet it would appear that they make a tasty meal for many predators. And why not? With an exceptionally high fat content, dolphin and other cetacean meat provides great nutrition for predators who stalk.
Many researchers agree that dolphins extremely social creatures and actually seem to depend on this interaction while hunting, mating and defending themselves and their pods. Typically, dolphins live and travel in groups ranging from 2-40 dolphins. Research has also shown dolphin pods as large as several hundred members.