650-700 dead seals were discovered in Makhachkala, Dagestan, on the shores of the Caspian Sea, reports the North Caucasus department of the Russian Federal Agency for Fishery.
It is not known what killed the animals. Researchers at the local branch of the Russian Federal Research Institute of Fisheries and Oceanography are collecting data to determine the cause of the seals’ death.
More dead seals may still wash ashore, said the Federal Fishery Agency.
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