Cyanobacterial observations have increased in both lakes and sea areas; the situation is typical for the late summer (

Many lakes have seen abundant or very abundant cyanobacteria in the past week. Sentinel-2 satellite image from southern Pirkanmaa on Monday, 26 July. Observations picked from Järvi-meriwiki between 26 and 27 July. © SYKE material, contains modified Copernicus Sentinel-2 data (2021)

Press release, July 29th, 2021 Finnish Environment Institute SYKE
Larger amounts of cyanobacteria have been observed in inland waters than in the previous week. The observations are concentrated in eutrophic lakes and bays in the southern parts of Finland. Cyanobacterial blooms have become more abundant along the coast and in the Archipelago Sea. In the open sea, significant cyanobacterial rafts have only been observed in the Bothnian Sea and in the western parts of the Gulf of Finland. In late summer, the pigment released from cyanobacterial blooms may discolour water and beaches turquoise blue.

Published 2021-07-29 at 14:31, updated 2021-07-29 at 14:30