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Pink river dolphins
They are not becoming extinct, in fact, they are quite abundant.
pink dolphines are becoming extinct by the number of oil spills
botel nose dolphins are becoming extinct because sharks are eating them.
Yangzte river dolphin
only one species of dolphins at this time that are going extinct are the pink river dolpinsHector's dolphins (New Zealand dolphins) are also in danger of becoming extinct. The endangered river dolphins are Amazon River dolphins, Ganges River dolphins, Chinese White dolphins, Indus River dolphins, and La Plata River dolphins.
no,they are not there are still numerous of dolphins and lots of speciesbbut they are being hunted for their meit and skin
yes the chinese dolphins are extinct
Australodelphis, Squalodon, and Kentriodon are some examples of extinct dolphins.
Yes, there are more dolphins free than in captivity. Although that may not be the case in some time because lots of dolphins are becoming extinct and being taken into captivity.
In December 2006 The Baiji Dolphin (also known as the Yangtze River Dolphin) was considered functionally extinct. In August 2007 they were spotted in China. Dolphin species that is in danger of becoming extinct is the Indus River Dolphin (Pakistan). Less that 600 dolphins are left. The Ganges River Dolphin and the Amazon River Dolphin are considered threatened.
Donations to charities dedicated to preservation of dolphins, as well as support of petitions to the japanese government to end their illegal whaling. Other methods would be by not feeding dolphins (many dolphins end up learning to beg and this ends up putting their lives at risk).