Eels in the Thames River have been left ''hyperactive'' due to high levels of cocaine in the water.

Bizarre on Female First

Bizarre on Female First

According to researchers from London's King's College, the drugs consumed by people in Britain's capital are being urinated into the wastewater system and having a negative effect on water life.

Researchers said in a paper: ''Concentrations of cocaine and benzoylecgonine remained high in wastewater across the week with only a minor increase over the weekend, which is not consistent with other cities. London is known as one of the highest consumers of cocaine.''

The paper has been read alongside a separate report, published by the University of Naples Federico II last year, which showed European eels ''appeared hyperactive'' when put in water containing a small dose of cocaine.