Mercury pollution has reached ocean’s deepest valley

Independent discusses how researchers have found that mercury pollution has reached ocean’s deepest valley. ‘This work shows that human-released mercury has reached and entered foodwebs in even the most remote marine ecosystems on earth,’ researcher says. [No Sstudy link provided.]

Man-made mercury pollution has reached the bottom of the deepest part of the ocean, scientists have discovered.

Two groups of scientists from China and the US found toxic mercury in fish and crustaceans living more than 11,000 metres below the surface of the ocean in the Mariana Trench.

“This is a surprise” said Dr Ruoyu Sun, who led a group of researchers from Tianjin University in China. “Previous research had concluded that methlymercury was mostly produced in the top few hundred meters of the ocean.