Killer whales are actually porpoises (member of the dolphin family) and not whales.
I saw that in the article..thanks.
The toothed whales (systematic name Odontoceti) form a suborder of the cetaceans, including sperm whales, beaked whales, dolphins, and others. As the name suggests, the suborder is characterized by the presence of teeth rather than the baleen of other whales.