River Thames, UK has some of the highest recorded levels of micro-plastics for any river in the world. Scientists estimate 94,000 micro-plastics per second flows down the river. Tiny bits of plastic have been found inside bodies of crabs, fishes in the Thames. Wet wipes accumulate on shorelines.
Careless disposal of Covid-19 plastic gloves, masks make the problem of plastic pollution worse. Bulk of micro-plastics come from break-down of large plastics with food packaging as a significant polluting source.