Mercury contamination in water 'set to rise'

Researchers from the US Geological Survey along with those from US and Australian universities have conducted a comprehensive study of how mercury-tinged emissions are adversely affecting the waters of the North Pacific Ocean and the fish inhabiting it.

According to the results of the research, tuna fish, swordfish and other seafood commonly consumed by humans are being increasingly contaminated with the toxic element, due to emissions from industrial plants being transformed into methylmercury and pollution the ocean.

The results predict a 50 per cent surge in mercury levels in the Pacific's waters by 2050 if coal-fired plants continue to emit pollution at current rates.

Jane Houlihan, the Environmental Working Group's vice president for research, stated: "The prospect of ever-increasing levels of mercury in the Pacific Ocean and in tuna makes it even more urgent that FDA (Food and Drug Administration) give the public more specific advice on fish that are safe to eat."

Mercury is so toxic to humans that both the US and EU have committed to halting exports of the element in the future.