Huge Swirls of Cyanobacteria Near the Bay of Gdańsk. They Can Even Be Seen From Space.

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The gigantic vortex shimmers in various shades of green, resembling a spiral galaxy from a distance. Its formation is entirely natural – the result of phytoplankton, microscopic plant organisms. In this case, it's cyanobacteria, some of the oldest organisms on Earth. These single-celled organisms were once considered plants, but were later classified as bacteria. Their green color is due to their chlorophyll content. The spectacular effect, capt…