Whales, dolphins and porpoises are all within the same group of animals called cetaceans. These air-breathing mammals are found in all oceans of the world, including Canada’s three oceans. The easiest way to tell the difference between these animals is whether they have teeth or not. Cetaceans are subdivide into mysticetes (baleen whales) and odontocetes (toothed whales, dolphins and porpoises).
