Warmer Oceans from Climate Change Impact Mercury Levels in Fish

October 4, 2013 2:11 PM

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A warming ocean could cause some serious issues for our environment. It can help melt ice near the poles and can also help shift deep sea ocean currents, which can impact weather patterns. Now, scientists have discovered something else that the warming oceans might affect. It turns out that rising ocean surface temperatures caused by climate change could make fish accumulate more mercury.

Mercury in fish is nothing new. In fact, fish higher up the food chain, such as sword fish, tuna and marlin, have greater concentrations of mercury. This is mainly due to the process of bioaccumulation. Put simply, predator fish eat many smaller fish which also have concentrations of mercury. The me...

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