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Irrawaddy dolphins in general however, are IUCN listed as an Endangered species, which applies throughout their whole range. [1] In 2004, CITES transferred the Irrawaddy dolphin from Appendix II to Appendix I, which forbids all commercial trade in species that are threatened with extinction. [40]
The Amazon river dolphin (Inia geoffrensis), also known as the boto, bufeo or pink river dolphin, is a species of toothed whale endemic to South America and is classified in the family Iniidae. Three subspecies are currently recognized: I. g. geoffrensis (Amazon river dolphin), I. g. boliviensis ( Bolivian river dolphin ) and I. g. humboldtiana ...
Toxins from the bacteria in the water can easily wipe out a critically endangered species, like the Atlantic Humpback dolphin. Anthropogenic sound includes the hearing loss and ear tissue damage of the dolphins from noisy coastal development and shipping. The geographic location of Atlantic humpbacks depend on the water temperature and prey ...
In fact, all extant river dolphin species are endangered or critically endangered, the IUCN says. Researchers discovered the Amazonian dolphin fossil in 2018, near the Napo River in Loreto, Peru.
Some dolphin species are at risk of extinction, especially some river dolphin species such as the Amazon river dolphin, and the Ganges and Yangtze river dolphin, which are critically or seriously endangered. A 2006 survey found no individuals of the Yangtze river dolphin. The species now appears to be functionally extinct. [154]
It is listed as Endangered on the IUCN Red List, [1] and by the U.S. government National Marine Fisheries Service under the U.S. Endangered Species Act. It is the second most endangered cetacean in the world. As of 2017 it is estimated that there are only about 1,800 individuals remaining (up from 1,200 estimated in 2001). [11]
As of 2022, the IUCN Red List of mammals lists both South Asian river dolphins as endangered. [18] [30] Two assessments in 2014 and 2015 estimated populations of 3,500 for the Ganges river dolphin and 1,500 for the Indus river dolphin. [19] [31] The Ganges species appears to be decreasing, while the Indus species may be increasing.
The Indo-Pacific humpback dolphin (Sousa chinensis) [3] is a species of humpback dolphin inhabiting coastal waters of the eastern Indian and western Pacific Oceans. [4] This species is often referred to as the Chinese white dolphin in mainland China, Macau, Hong Kong, Singapore and Taiwan as a common name.