Biodiversity Currently the Caspian Sea extends approximately 1,150 km by 450 km, with a total area of 387,000 km 2. With a 10 m decline, four out of 10 ecosystem types unique to the Caspian Sea ...

Environmental activists and officials have raised alarms over the rapidly decreasing water levels of the Caspian Sea, emphasizing the urgent need for collective action among the bordering nations.