In October last year, fish farmers at Nyenye Beach in Siaya County suffered massive losses after strong currents ripped through 128 cages killing more than 200, 000 fish.
Although Kenya Marine Fisheries and Research Institute (Kemfri) experts are yet to table a report on what exactly happened, local experts told the farmers that it may have been due to strong currents that hit the unsheltered shores. Prof Stephen Agong’ of Jaramogi Oginga Odinga University attributed the catastrophe to lack of oxygen, citing a complex phenomenon called upwelling - where oxygen-poor water from the bottom of the lake mix with that of the surface, decreasing the oxygenation of the surface water.