Pollution

How does mercury get into fish?
Answered by Planet Green
  • Planet Green

    Planet Green

  1. When power plants use coal to produce electricity, mercury is emitted into the air. This accounts for 40 percent of the mercury in the Earth's environment. When it rains, the mercury in the air falls into lakes, rivers and oceans. Bacteria in these bodies of water convert the mercury into methylmercury, which is easily absorbed into small organisms. Small fish ingest it when they eat those tiny organisms, and bigger fish eat the smaller fish. As bigger fish eat more organisms than small fish, they end up ingesting more methylmercury.

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