are river dolphins endangered

River dolphin, any of six species of small, usually freshwater mammals that are related to whales. River dolphins are relatively small compared to other dolphins, having evolved to survive in warm, shallow water and strong river currents. Freshwater river dolphins are among the most endangered dolphin species on Earth. There are two types of Amazon river dolphins namely, the “boto” (Inia geoffrensis) and the “tucuxi” (Sotalia fluviatilis), which were once considered abundant in the Amazon. As you can see, there are many reasons, but they mostly have to do with the negative impact of human populations and their demand for resources. Two species of river dolphins, along with the vaquita porpoise, and the northern right whale are currently included among the endangered species of whales and dolphins. River dolphins inhabit primarily fresh water rivers in Asia and South America. They inhabit rivers of south-central Asia, China, and South America and the coastal waters of Brazil, Argentina, and Uruguay and differ from other dolphins in their long beaks and rounded foreheads. Increasing contamination levels in the Amazon river has spearheaded the risk of their extinction. Water pollution from coastal factories kills small river fish, which is the food source for pink dolphins. The dolphins of the Amazon river have been listed as “Endangered” by the International Union for Conservation of Nature (IUCN) in its latest “Red List” published in November 2018.. Why is the South Asian river dolphin endangered, then? The Ganges River dolphins are currently in the endangered status. Other than that, … Among all the dolphins in the world, the pink river dolphins is very unique not only in appearances but also in other physical characteristics. According to the International Union for Conservation of Nature, the most threatened dolphins are: – Baiji or Chinese river dolphin (Lipotes vexillifer). River Dolphins River Dolphins. They have adapted quite well to the muddy river environment. In 2007 there was a report of a sighting, but although there is no confirmation of this, it is possible that there are a few river dolphins alive yet. This dolphin has been very famous due to its pink color and usually people doubt the existence of a pink colored dolphin. As you can see, there are many reasons, but they mostly have to do with the negative impact of human populations and their demand for resources. The Ganges River of India is inhabited by a subspecies related to the Indus river dolphin. It is assumed that only around 1.800 species are left. The baiji, the Chinese river dolphin, is considered extinct, having been a victim of dams and pollution in China’s Yangtze River. Critically Endangered. The building of dams alongside the increasing pollution in water are major contributing factors to their declining numbers and habitat. They range in size from the 5-foot (1.5 m) long South Asian river dolphin to the 8-foot (2.4 m) and 220-pound (100 kg) Amazon river dolphin.Several species exhibit sexual dimorphism, in that the males are larger than the females. Gold mines require mercury for their mining processes, which is then discarded as waste into the rivers. The Heart-wrenching Truth About Why Pink Dolphins are Endangered.


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