The Killer Whale or Orca is a large representative of the dolphin family. It sports a characteristic color pattern of black and white blotches. Killer Whales have sturdy and powerful builds and are endemic to all the world’s oceans and some large seas. Orcas are a highly intelligent and highly predatory species, often hunting in organized and efficient packs. They feed on large aquatic fish and mammals. While a favorite in aquariums around the world, captive programs are controversial as orcas do poorly in captivity.