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Algal bloom monitoring 24.8.2017: Cyanobacteria have increased in lakes, blooms continue in sea areas

Press release 2017-08-24 at 12:41
Sinilevää rantakivillä
Cyanobacterial blooms © KASELY / SYKE

Cyanobacterial blooms have increased especially in lakes of the Southern Finland. In sea areas, cyanobacterial blooms have been observed in the Gulf of Finland, Bothnian Sea and along the Southeastern and Western coasts. Depending on wind conditions, some cyanobacteria may also drift to sea shores. Water containing cyanobacteria should always be handled with caution, due to potential adverse health effects.  More in Finnish

Large map of the week's 34 algal situation

Risk assessment of blue-green algae blooms:

More information



Head of Unit Marko Järvinen, Finnish Environment Institute SYKE
Tel +358 295 251 241,

Sea areas

Cyanobacterial bloom situation

Senior Researcher Sanna Suikanen, Finnish Environment Institute SYKE
Tel. 0295 251 106,

State of the Baltic Sea

Leading Researcher Harri Kuosa, Finnish Environment Institute SYKE
Tel. 0295 251 106,


Communication Specialist Hannele Ahponen, Finnish Environment Institute SYKE
Tel +358 50 327 5997,

Target group: