Ziphius cavirostris (Cuvier 1823, up to 6.9m males) is the extant Cuvier's beaked whale, goose-beaked whale. Here it nests basal to other tested extant odontocetes, but lost teeth after the odontocete radiation. Suction draws in prey. The maxilla extends over the frontals to accommodate a melon, a fatty-tissue organ to focus sounds for echolocation. This cosmopolitan whale is adapted to deep diving.

Orcinus orca (killer whale; extant; Linneaus 1758; 6-8m in length) is the largest member of the dolphin family. All of the teeth are canine-shaped. No upper incisors are present on the premaxilla. The naris and premaxilla are extended to the forehead, as in all whales. The jugal is a slender strut. The nasals are wider than long. The manus is a flipper. The hind limbs are absent. The tail ends in flukes for rapid swimming.

Tursiops truncatus (Montagu 1821; 2-4m in length) is the common bottle nose dolphin. The mandible is longer than the rostrum. The teeth are small and peg-like. The nasals remain longer than wide.