Mercury never goes away. It just gets moved around, changing from one chemical form to another, with water playing a major role in both the transport and transformation of mercury.
Once mercury is released into waterways it can end up just about anywhere.
Ocean currents can carry it around the world, it can evaporate into the atmosphere, and be deposited back into the oceans or onto land.
Water also plays an essential role in the transformation of metallic mercury into its far more dang…