Russian authorities said Friday they were investigating the mysterious death of nearly 300 endangered seals that had been discovered washed up on the shores of the Caspian Sea.
Between Sunday and Thursday, 272 dead Caspian seals had been found at a number of locations in the southern region of Dagestan including its regional capital Makhachkala and Derbent, another major city, said the state fisheries agency Rosrybolovstvo.
Some of the seals were pregnant.
An agency spokeswoman told AFP that more dead seals could yet be discovered.
A team of experts arrived from Moscow to help conduct an investigation.
The fisheries agency said "infectious disease" as well as "external" reasons could be behind the mass die-off and an animal abuse probe would be launched.
The Caspian Sea, the world's largest inland body of water, is bounded by five countries: Russia, Kazakhstan, Azerbaijan, Iran and Turkmenistan.
Seals have for decades suffered from over-hunting and the effects of industrial pollution in the Caspian Sea.
Experts say there are now about 70,000 Caspian seals, down from more than 1 million in the early 20th century.
As well as the seals and other endemic species including the famed beluga sturgeon, the Caspian Sea boasts vast energy reserves.
Pollution from the extraction of oil and gas there, along with declining water levels due to climate change, pose a threat to many species and put the future of the sea itself at risk.
The UN Environment Program has warned that the Caspian "suffers from an enormous burden of pollution."
A Message from The Moscow Times:
Dear readers,
We are facing unprecedented challenges. Russia's Prosecutor General's Office has designated The Moscow Times as an "undesirable" organization, criminalizing our work and putting our staff at risk of prosecution. This follows our earlier unjust labeling as a "foreign agent."
These actions are direct attempts to silence independent journalism in Russia. The authorities claim our work "discredits the decisions of the Russian leadership." We see things differently: we strive to provide accurate, unbiased reporting on Russia.
We, the journalists of The Moscow Times, refuse to be silenced. But to continue our work, we need your help.
Your support, no matter how small, makes a world of difference. If you can, please support us monthly starting from just $2. It's quick to set up, and every contribution makes a significant impact.
By supporting The Moscow Times, you're defending open, independent journalism in the face of repression. Thank you for standing with us.
Remind me later.