The term ORDER INCLUDING WHALES AND DOLPHINS can be summarized as the scientific classification of Cetacea, which is a seven-letter word. Cetacea is an order of aquatic mammals that includes whales, dolphins, and porpoises. This order is divided into two suborders: Mysticeti, which includes baleen whales, and Odontoceti, which includes toothed whales. Cetaceans are found in all oceans and some rivers, and they are known for their intelligence and social behavior.