Chilean dolphin

The Chilean dolphin (Cephalorhynchus eutropia), also called the black dolphin or tonina, is a small and thickset dolphin found only off the coast of Chile. It ranges from Valparaíso at 33 degrees south to Cape Horn at 55 degrees south, favouring shallow water usually less than 20 metres deep and within about 500 metres of shore. In the north it lives in bays and estuaries on more exposed coast, in the south in fjords and channels, and it is often found near river mouths and where the tide changes strongly. Adults are about 1.7 metres long and weigh up to 60 kilograms, with a short beak, a rounded dorsal fin and rounded flippers, a white throat and underside and an otherwise grey body marked by a black line joining the blowhole, eyes and dorsal fin. It feeds on sardines, anchovies, salmon, squid and crustaceans. The population is poorly known but is estimated at fewer than 5,000 animals, and people take it for food and as bait in long-line swordfish and crab fisheries.