Small, swift and very distinctive—a Commerson’s coloration consists of mainly black on the head, fin and flipper regions and mostly white in the other areas of the body. The dorsal fin is small and rounded at the tip and the beak is small or unnoticeable. Females are typically larger than males.
Commerson’s dolphins are one of the smallest dolphins and are found in shallow, coastal waters of the sub-Antarctic. They range from the tip of South America (Peninsula Valdes to Tierra del Fuego), through the Strait of Magellan, around the Falkland Islands and the Kerguelen Islands. They feed on krill, cuttlefish, squid, shrimp and small fishes.