blue-green algae cyanobacteria also known as cyanophyta. blossoming bacteria plant time in summer in baltic sea by beach.

algae bacteria bad baltic beach bloom blooming blossom blossoming blue bluegreen close cloudy coast color concept cyanobacteria cyanophyta detail dirty dogs environment estonia finland floating green gulf harmful hazard health medial medical natural nature opaque outdoors plant poisonous polluted pollution problem sea seasonaln summer surface swimming time toxic toxins water wave