![](http://www.ecns.cn/hd/2020/03/23/361144f2b3a1421d9190d18bc5b71971.jpg)
The aerial photo shows the Lake Bled in Slovenia, Mar. 20, 2020. The popular lake has been coloured red for months due to the spread of cyanobacteria.(Photo/IC)
![](http://www.ecns.cn/hd/2020/03/23/b6dc1c997a2848a7ba33c9a393dc5d42.jpg)
The aerial photo shows the Lake Bled in Slovenia, Mar. 20, 2020. The popular lake has been coloured red for months due to the spread of cyanobacteria.(Photo/IC)
![](http://www.ecns.cn/hd/2020/03/23/22b6c7b21d27468091cc78e3ee1424b3.jpg)
The aerial photo shows the Lake Bled in Slovenia, Mar. 20, 2020. The popular lake has been coloured red for months due to the spread of cyanobacteria.(Photo/IC)