River Dolphins River dolphins have access to food that dolphins in the ocean do not. The Indus River dolphin eats freshwater fish such as catfish and carp, as well as clams and shrimp. The Amazon ...

How big they are: From 5 to 32 feet (1.5 to 10 meters) long, depending on the species Dolphins live in almost every ocean, except most tend to avoid the cold waters in the Arctic and around Antarctica ...