Most of the mercury released into the atmosphere is in the form of elemental mercury. This mercury can remain in the atmosphere for over a year and travel for thousands of miles. Eventually it is either rained out through wet deposition or it settles out through dry deposition. Sixty percent of the mercury that leaves the atmosphere ends up on land and forty percent ends up in water. Once the mercury leaves the atmosphere it is much easier for it to react with other elements. Mercury reacts with other elements and forms two main products, mercury(II) sulfide (cinnabar) or methyl mercury. Sulfate-reducing bacteria in the water absorb the mercury and then convert it into methyl mercury. Cinnabar is able to settle out and leave the cycle through sedimentation. Methyl mercury on the other hand is able to bioaccumulate in biological organisms causing many health problems. Greater than ninety-five percent of the mercury found in fish is in the form of methyl mercury.