Commerson’s dolphin (Cephalorhynchus commersonii)
Group formation: Social groups 1-10
Size: 1.5-1.7 m, calf 1 m
Weight: 45-86 kg, calf 5.5 kg
Age: 20 yrs
Sexual maturity: 5-9yrs
Gestation: 12 mths
Weaning: unknown
Diet: opportunistic coastal feeders, mostly mysid shrimp, fish, squid, algae, isopods and other benthic invertebrates
Predators: sharks, killer whales
Distribution: two populations, one in Argentina / in the Strait of Magellan / near the Falkland Islands and a second lives near the Kerguelen Islands
Chile: we have seen them inside the fjords of Aysen with a group of Chilean dolphins (first record of this species in Aysen)
Population size: unknown
Conservation Status: Data Deficient ver 3.1, Pop. trend: unknown
Threats: Illegal catches for bait and consumption (Peru, Ecuador, Chile), chemical and plastic pollution, man-made noise impacts (seismic surveys, military sonar), entanglement in fishing gear, bycatch, over fishing, captivity