What is the largest species of dolphin?

The largest species of dolphin is the orca, also known as the killer whale (Orcinus orca). Male orcas can grow up to 9.8 meters (32 feet) in length and weigh as much as 6,000 kilograms (13,000 pounds), while females are slightly smaller. Orcas are apex predators and are found in oceans around the world, often living in tight-knit pods. They hunt cooperatively and have a diverse diet, including fish, seals, and even other whale species. Despite their name, orcas are actually dolphins, not true whales.