Water along the shore of the Gulf of Finland has turned a swampy green color resembling matcha latte and acidic shades in places, news outlet Fontanka reported.
Water in the gulf has changed color for several years in a row, according to Fontanka. The North-Western Directorate of Rosprirodnadzor stated that the discoloration is linked to the rapid growth and dying off of blue-green algae.
The thick and viscous swamp-green consistency, along with light gray, blue, deep blue-black, and light green spots on the water, consists of colonial Microcystis aeruginosa Kützing algae at different stages of decomposition. Officials noted that the process may be connected to hot weather.
Algae health risks
Human reactions to the algae depend on individual skin sensitivity and other personal features. Experts recommend that people avoid swimming in green bodies of water that emit an unpleasant smell.
In a previous report, Lake Retba in Senegal, also known as the Pink Lake, returned to its original color following a flood in 2022, indicating the restoration of the unique ecosystem of the water body.
