A giant, gentle sea creature that belongs to the manatee family is now “functionally extinct” in China with no sightings recorded since 2008, a new study said Wednesday.
But according to conservationists from the Zoological Society of London (ZSL) and the Chinese Academy of Sciences, the number of dugongs in waters near mainland China has dwindled significantly since 1970 — due in large part to human activity.
The scientists’ research was published Wednesday in Britain’s Royal Society of Open Science. In a press release announcing the findings, the report’s authors said there are “strong indications that this is the first functional extinction of a large mammal in China’s coastal waters,” where they have been spotted for hundreds of years.
“Our new study shows strong evidence of the regional loss of another charismatic aquatic mammal species in China — sadly, once again driven by unsustainable human activity,” said Samuel Turvey, a professor and researcher at ZSL’s Institute of Zoology.
The authors recommended that the International Union for Conservation of Nature, which keeps a global conservation “Red List,” reassess the dugong species’ regional status as critically endangered (possibly extinct) across the entirety of Chinese waters.
Fishing, ship strikes and human-caused habitat loss were the main drivers of extinction, the authors said. Sea grass is a specific marine habitat that is being “rapidly degraded by human impacts,” according to the release.
China has made sea-grass restoration and recovery efforts “a key conservation priority,” but the researchers say the efforts may be too little too late.
“Dugongs stay in waters up to 10 meters and are constantly grazing,” said Heidi Ma, a postdoctoral researcher at ZSL’s Institute of Zoology and co-author of the report. “But there is a lot of competition for resources in these areas,” she said, adding that seagrass contains a high level of carbon and is an essential source of food and shelter for fish.
Since 1988, China has classified the dugong as a “Grade 1 National Key Protected Animal,” a designation that technically affords it the highest level of protection.