Marine Mammal Science & Conservation

Chilean dolphin

Chilean dolphin (Cephalorhynchus eutropia)

Group formation: Social groups 10-30

Size: 1.7 m, calf 1 m

Weight: 63 kg, calf unknown

Age: unknown

Sexual maturity: 5-9 yrs

Gestation: unknown

Weaning: unknown

Diet: small schooling fish, such as sardines (Strangomera bentincki), squid (Loligo gahi), and crustaceans (e.g. Munida subrugosa)

Predators: sharks, killer whales

Distribution: endemic to cold, shallow, coastal waters, estuaries, and channels around Chile from 33° S to the tip of South America to the Strait of Magellan and channels of Tierra del Fuego

Chile: common in the fjords and channels of Aysen, groups of 8-20, not very social, often seen with Chilean dolphins and with Commerson’s dolphins

Population size: < 5000

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