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 ...

Bottlenose dolphins are extremely intelligent, possessing larger brains than humans. The U.S. Navy Marine Mammal Program trains dolphins to locate sea mines and detect and mark enemy divers. They also ...

Dolphins live in almost every ocean, except most tend to avoid the cold waters in the Arctic and around Antarctica. Some also ...