Essential Commerson's Dolphin Information
Habitat and Appearance
Commerson’s Dolphins are found off the southern coasts of South America, including the Falkland Islands, and are named after the French naturalist Dr. Commerson, who described them in 1767. These dolphins are among the smallest cetaceans, growing to only about 1.5 meters (5 feet) in length as adults.
Their appearance is particularly striking, with bold black and white coloration that gives them a miniature orca-like look. The head, dorsal fin, and tail flukes are black, while the body and throat are bright white, with a clear delineation between the two colors.
Behavior and Feeding
Commerson’s Dolphins are highly active, curious, and frequently observed engaging in playful behaviors, such as bow-riding the Zodiacs used for shore excursions. They are also known to swim upside down, a behavior believed to help them spot fish and squid, which form the core of their diet.
Breeding and Sightings
These dolphins have a gestation period of about 11 months, with breeding occurring in late spring and summer. Calves are born the following spring or summer, making it common to see mothers with young during Antarctic cruises.
Commerson’s Dolphins are commonly spotted in areas like Puerto Deseado, the Strait of Magellan, and Tierra del Fuego, as well as the channels of southern Argentina.
Interesting Facts
- Size and Appearance: One of the smallest cetaceans, these dolphins are only about 1.5 meters long, with distinctive black and white markings resembling a miniature killer whale.
- Playful Behavior: They are known for their playful nature, frequently bow-riding boats and swimming upside down to hunt for prey.
- Key Locations: Besides the Falklands, these dolphins can be seen around southern Argentina, including the Strait of Magellan and Tierra del Fuego.
