A section of the Yangtze River in Chongqing, China, has overnight turned red. The cause is still being investigated, but officials say it may have been caused by recent floods stirring up silt upstream. Fishermen are going about their business as usual and concerned citizens are collecting samples for analysis. The Environmental Protection Bureau is also looking into potential industrial pollution or sewage breaches.
The river Jian that is connected to the Yangtze river in china was colored red by firework factories dumping out coloring agents into the river in december last year.
It is not completely unnatural for a body of water to turn red, Chromatiaceae bacteria are known to cause this coloring when a lake gets oxygen deprived from say a draught and they thrive on it. This happened last year to the OC Fisher reservoir in Texas. This behaviour has not been seen in a big river yet .
Picture: China Foto Press / Barcroft Media