The killer whale is apart of the Delphinindae family. They are found in all of the seas ranging from the Arctic to the Adriatic. It is the largest whale of the oceanic dolphins. The length of this species can get up to 31 feet and weigh in at 11,000 pounds. Some of the characteristics of this classification is that the Delphinindae family has a dorsal fin and a well defined beak present or absent.
None have a well expanded tooth crowns.
The length, 1.7 to about 9 meters. There is 1 species found in salt water where as there is another in the Irrawaddy River , freshwater. Also, there are three suborders of whales in the Cetacean order. Archaeoceti, they are now extinct. There are about 70 species in the modern toothed cetaceans.