Dolphins are very
intelligent aquatic marine mammals. There
are places where they attract huge crowds displaying variety of acts – they are
considered very friendly to humans.
The longest river in Asia, ‘Yangtze
River’ flows entirely in China providing a rich river basin to the land with
highest population. The Yangtze is the
sixth-largest river by discharge volume in the world. Like many other rivers, Yangtze plays a large role in the history, culture and
economy of China. It is habitat to many
species including the Chinese alligator, the finless porpoise, the Chinese
paddlefish, Yangtze River dolphin or baiji, and the Yangtze sturgeon.
The baiji (meaning
"left behind") has been considered extinct species of freshwater
dolphin formerly found only in the Yangtze River in China. Nicknamed
"Goddess of the Yangtze" – it was regarded as the goddess of
protection by local fishermen and boatmen in China. The baiji population declined drastically in
decades as China industrialized and made heavy use of the river for fishing,
transportation, and hydroelectricity. It was feared that baiji could be the
first dolphin species in history that humans have driven to extinction. Though efforts were underway, they failed.
Researchers have failed to
find the animal and the presence of them have been lesser and lesser with many
believing that the last known Baiji named Qiqi died in 2002. The demise of the beautiful river creature
has often been described as one of scientists' most significant failures to
respond to an environmental crisis. The Yangtze River dolphin was declared
extinct in 2007, after a survey led by the Zoological Society of London failed
to locate any specimens – either spotting them or hearing their distinctive
whistles under water. The mammal had a
highly developed sonar and reduced eyesight – two characteristics consistent
with the fact it had to navigate through murky waters.
Now there is sizzling news
that Chinese conservationists believe they may have caught a rare glimpse of a
freshwater dolphin that was declared functionally extinct a decade ago having
graced the Yangtze river for 20 million years. At a time when Scientists and environmentalists had almost abandoned
hope that baiji, could survive as a species after they failed to find a single
animal during a fruitless six-week hunt along the 6,300-km (3,915-mile)
waterway in 2006, a sighting by a team of amateur conservationists gets reported near the city of Wuhu in Anhui province.
“No other creature could
jump out of the Yangtze like that,” Song Qi, the leader of that expedition told
Sixth Tone, a government-backed news website. “All the eyewitnesses – which
include fishermen – felt certain that it was a baiji.” Song told the Guardian
the unconfirmed sighting occurred during a seven-day search mission down the
Yangtze that began in the city of Anqing on 30 September.
On 4th of
October, they spotted a “white dot” emerging from the river. Soon after a
“white light” appeared to puncture the surface of the water for a second time.
Seconds later Song spotted what he believes was the baiji for the third and
final time, swimming towards the river’s eastern bank. The amateur
conservationist, whose day job is as a publisher in Beijing, admitted he was
not a baiji specialist and could not be totally sure the animal he had seen was
the aquatic mammal. His group captured no images that might conclusively
identify it. But Song said local
fisherman who had also seen the creature were “100% certain” it was the baiji.
With the apparent confirmation
of its demise, the narrow-beaked river dolphin has become a symbol of the
devastating environmental price China has paid for decades of unbridled
development. In the 1950s, the Yangtze is thought to have been home to thousands
of such animals. But by the end of the 1980s that number had fallen to perhaps
200 thanks to a lethal cocktail of dam-building, over-fishing, pollution and
boat traffic. By the turn of the century just 13 remained, according to one
survey.
In his book about the
baiji’s plight, Witness to Extinction, biologist Samuel Turvey described how
thousands of years of human activity had decimated the Yangtze basin, a
bio-diverse area once regarded as the Amazon of the East. As well as the baiji,
the ecosystem was once home to two species of rhinoceros, elephants, gibbons
and giant pandas. All have now disappeared. During the Great Famine of the late
1950s, when tens of millions of Chinese people starved to death as a result of
Mao Zedong’s rule, “the goddess of the Yangtze became lunch”, Turvey wrote.
“It was the dolphins or it
was our children,” one Yangtze fisherman is quoted as telling a Hong Kong
journalist. “Which would you choose?” More recently, shipping and catastrophic
levels of industrial pollution have taken their toll. China’s official news
agency, Xinhua, this week reported that more than 400,000 “chemical
enterprises” were operating on the Yangtze’s middle and lower reaches – around
half the country’s total.
A solitary baiji might
revive hopes ~ yet, the situation is far from satisfactory – and China is not
alone in that aspect. Situation here and in many other countries is not any
different when it comes to pollution, contamination and mindless constructions.
With regards – S.
Sampathkumar
12th Oct 2o16.
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