Answer: Israel
Notes: Recently, the Sea of Galilee in Israel turned red due to the bloom of Botryococcus braunii algae. The Sea of Galilee is a large freshwater lake located in northeastern Israel. It lies in the Jordan Rift Valley, mainly fed by the Jordan River and some underground springs. Known by names like Sea of Kinneret, Lake of Gennesaret, and Lake of Tiberias, it is bordered by plains in the north and hills of Lower Galilee in the west and southwest. Botryococcus braunii is a single-celled green algae found in freshwater or brackish lakes, known for producing hydrocarbons and forming protective biofilm structures.
