A landmark study from Harvard University predicts mercury levels in the Pacific Ocean will rise 50 per cent by 2050 if emission rates continue as expected. Mercury rapidly accumulates up the food chain in the sea to potentially dangerous levels in larger fish such as tuna. Previous studies show that 75 per cent of the mercury people are exposed to comes from eating marine fish and shell fish.
Sunderland et al., 2009. Mercury sources, distribution, and bioavailability in the North Pacific Ocean: Insights from data and models, Global Biogeochemical Cycles. 23, GB2010.