The Yangtze River has some of the most turbid waters in the world. This MERIS reduced resolution image from 25 May 2005 was processed with BEAM software. It shows the high concentrations of total supended matter at the mouth of the Yangtze River. However, since the present neural network algorithm was limited to 50 mg/l some areas of the Yangtse river have much higher concentrations, i.e. the colour bar at the right end (red9 means 50 mg/l and above.