Delphinapterus leucas (Pallas 1776, 5.5m) is the extant beluga or sea canary. All the teeth are caniniform. The jugal is reduced to an anterior and posterior vestige. The maxilla extends over the orbit as the nares retract posteriorly.

Monodon monoceros (Linnaeus 1758, 5.5m) is the extant narwhal, known for a unique spiral upper left canine tooth and sometimes both canines. Finger 2 is the longest and has more phalanges. The sternum is broad and Y-shaped. The dorsal transverse processes are transversely elongate.