Despite their name, killer whales (orcas) are actually dolphins.

Learn how changes in dolphin vocal frequency and duration may reveal engagement during training, feeding, and play.

Dolphins produce a range of vocalizations used for echolocation and communication. These vocalizations vary with social ...

Collectively, both whales and dolphins, as well as their porpoise cousins, are known as cetaceans. The cetacean order comprises two subgroups: baleen whales (including gray whales, right whales, blue ...

Wildlife officials are offering a hefty reward to anyone who can provide information about a pregnant bottlenose dolphin that was shot to death in southern Mississippi. The bottlenose dolphin was ...

A bottlenose dolphin was found decapitated in North Carolina, and federal officials are offering up to $20,000 for information related to its death. A citizen reported the deceased dolphin on April 15 ...

Marine mammal workers in Gulfport pulled this dead, pregnant bottlenose dolphin ashore April 20 after someone found it on the beach in Waveland. The rope on its tail was used to pull it ashore. An $11 ...

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 ...