How many finless porpoises are left in China's Yangtze River? An expedition is under way to count how many of these endangered animals survive in the heavily polluted waterway.
There are less than 1,800 of the animals in the wild, mainly in the central and lower reaches of the 3,915-mile (6,300 kilometers) Yangtze River and two large adjoining lakes, Dongting and Poyang.
Two recent surveys found that populations of the endangered animal, the only freshwater finless porpoise in the world, had plummeted in Dongting Lake. Numbers in Poyang, however, remained relatively stable — 450 porpoises were counted there, the WWF, which is helping to organize the expedition, reported.
The Yangtze finless porpoise
Nevertheless, estimates suggest the animal could go extinct within 15 years if major steps aren't taken to address the porpoise's plight. It's most threatened by water pollution, sand dredging, strikes by boat propellers and electro-fishing, a technique that stuns fish — and porpoises — by sending an electric current into the water, according to the WWF.
The expedition comes six years after a similar trek along the Yangtze that failed to find any surviving Baiji dolphins, a close relative of the finless porpoise that was subsequently declared functionally extinct.
"We are not optimistic about the estimated results in the mainstream investigation at this moment," said Wang Ding, a researcher at the Chinese Academy of Sciences' Institute of Hydrobiology, in the statement.
"As a symbol of the Yangtze ecosystem, the status of the finless porpoise is a reflection of the health of the Yangtze River," added colleague Wang Kexiong. "It has already lost the Baiji dolphin, and cannot bear losing the Yangtze finless porpoise."
The expedition will cover a 1,055-mile (1,700 km) expanse of the Yangtze. Preliminary results will be announced in mid- to late December, and the complete report will be released in March 2013.
Follow OurAmazingPlanet on Twitter @OAPlanet. We're also on Facebook and Google+.
Copyright 2012 OurAmazingPlanet, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
Support HuffPost
Our 2024 Coverage Needs You
Your Loyalty Means The World To Us
At HuffPost, we believe that everyone needs high-quality journalism, but we understand that not everyone can afford to pay for expensive news subscriptions. That is why we are committed to providing deeply reported, carefully fact-checked news that is freely accessible to everyone.
Whether you come to HuffPost for updates on the 2024 presidential race, hard-hitting investigations into critical issues facing our country today, or trending stories that make you laugh, we appreciate you. The truth is, news costs money to produce, and we are proud that we have never put our stories behind an expensive paywall.
Would you join us to help keep our stories free for all? Your contribution of as little as $2 will go a long way.
Can't afford to donate? Support HuffPost by creating a free account and log in while you read.
As Americans head to the polls in 2024, the very future of our country is at stake. At HuffPost, we believe that a free press is critical to creating well-informed voters. That's why our journalism is free for everyone, even though other newsrooms retreat behind expensive paywalls.
Our journalists will continue to cover the twists and turns during this historic presidential election. With your help, we'll bring you hard-hitting investigations, well-researched analysis and timely takes you can't find elsewhere. Reporting in this current political climate is a responsibility we do not take lightly, and we thank you for your support.
Contribute as little as $2 to keep our news free for all.
Can't afford to donate? Support HuffPost by creating a free account and log in while you read.
Dear HuffPost Reader
Thank you for your past contribution to HuffPost. We are sincerely grateful for readers like you who help us ensure that we can keep our journalism free for everyone.
The stakes are high this year, and our 2024 coverage could use continued support. Would you consider becoming a regular HuffPost contributor?
Dear HuffPost Reader
Thank you for your past contribution to HuffPost. We are sincerely grateful for readers like you who help us ensure that we can keep our journalism free for everyone.
The stakes are high this year, and our 2024 coverage could use continued support. If circumstances have changed since you last contributed, we hope you’ll consider contributing to HuffPost once more.
Support HuffPostAlready contributed? Log in to hide these messages.