Mercury levels in oceans double or triple those of the past

"Mercury is an environmental poison that's detectable wherever we look for it, including the ocean abyss," says Don Rice, director of the NSF's Chemical Oceanography Program.
The study, involving scientists from the United States, France and the Netherlands, has been published in the journal Nature.
Mercury created by human activity, including burning fossil fuels and mining for gold, is more abundant in the world's ocean than previously thought, the researchers say.
Inorganic mercury enters the marine food chain as toxic methylmercury, which if consumed by humans via seafood can lead to nervous system damage.
http://www.techtimes.com/articles/12328/20140807/mercury-levels-in-oceans-double-or-triple-those-of-the-past.htm