The killer whale, also referred to as the orca whale or orca, and less commonly as the blackfish, is a toothed whale belonging to the oceanic dolphin family. Wikipedia - Stop the Dolphin and Orca Slaughter NOW
Killer Whale-In captivity they do not do well- they immediately cease using radar. They are also extremely social beings, and will spend their whole life with the same group-support leaving them in their natural habitat. Free Willy is what this is about.