Mixed Messages From Old Father Thames

The 95 miles of the tidal Thames was declared 'biologically dead' in the 1950's. The good news is that, a recent survey by scientists from the Zoological Society of London, found eels; seals; seahorses and sharks living in its waters (https://www.theguardian.com/environment/2021/nov/10/seahorses-and-sharks-living-in-river-thames-analysis-shows-aoe). The less good news is that nitrate levels are increasing in the Thames. This results from industrial run off and sewage discharges by Water Companies into the river. The average summer water temperature in the upper tidal Thames has also increased annually by almost 0.2C since 2000. The Thames could easily go back to being 'biologically dead'.