In the winter of 2023/2024. the mass death of swans was observed on Lake Karakol on the eastern coast of the Caspian Sea. From 21 December 2023 to 25 January 2024. 1132 swan corpses (Cygnus olor. https://www.spidertattooz.com/Coast-Guard-E7-Rating-Badge-Yeoman-YN-blue/