ASTANA, March 13 (Xinhua) -- A total of 3,433 Caspian seals have died in Kazakhstan's Mangystau region over the past four years amid deteriorating environmental conditions in the Caspian Sea, the Kazinform news agency reported Friday, citing the Kazakh Institute of Hydrobiology and Ecology.
According to the institute, expeditionary, field and laboratory studies conducted in 2024-2025 across multiple coastal areas of the Caspian Sea found the mass deaths to be multifactorial.
