The '''orca''' or '''killer whale''' is the largest species of the [[dolphin]] family. Some orcas are kept in captivity and trained to give public perfrmrances.
Orcas are the largest marine carnivores and in packs will even attack larger [[whale]]s. Although many groups suffice on fish they are opportunistic predators and often prey on [[seal]]s, [[sealion]]s and [[walrus]]es, particularly during the breeding seasons.
Orcas are found throughout the world's [[ocean]]s.
The movie ''Free Willy'' featured an orca as the title character.