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The IUCN lists Commerson's dolphin as Least Concern in its Red List of Threatened Species. The proximity of the dolphin to the shore makes accidental killing in gillnets a common occurrence. The dolphin was killed for use as crab bait by some Argentinian and Chilean fishermen in the 1970s and 1980s, but this practice has since been curtailed. [2]
According to a study in 1971, Peale's dolphin and the Cephalorhynchus species are the only dolphins that do not whistle (no acoustic data are available for the hourglass dolphin). Peale's dolphin also shares with several Cephalorhynchus species the possession of a distinct white "armpit" marking behind the pectoral fin.
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Among the wildlife that Commerson observed was a particular kind of dolphin in the Strait of Magellan, now known as Commerson's dolphin (Cephalorhynchus commersonii). [5] Commerson's partner and assistant, Jeanne Baré (also referred to Jeanne Baret), accompanied him on the voyage, disguised as a man. Baré acted as a nurse to Commerson, who ...
Dolphin stampedes typically occur when hundreds − and sometimes thousands − of dolphins leap in and out of the water in one direction, according to Capt. Dave’s Dolphin & Whale Watching Safari.
In Patagonia, dusky and Commerson's dolphins have been attracting more and more viewers, and 90% of boat trips encountered dusky dolphins in 2001, up from 25% two years before. Dolphin watching in this area started as an alternative to whale watching, which was mostly based on that of the southern right whale. [55]
In a rare video captured by a whale watching expedition off the coast of San Diego this week, a killer whale teaches its baby how to hunt by headbutting a dolphin, causing it to flip several times ...
A Pacific white-sided dolphin flips out of the water in the Cordell Bank National Marine Sanctuary off California. These dolphins keep close company. [17] White-sided dolphins swim in groups of 10 to 100, and can often be seen bow-riding and doing somersaults. [6] [18] Members form a close-knit group and will often care for a sick or injured ...