How Does Toxic Mercury Get Into Fish?
The source of the most mercury in marine life comes from coal burning plants. The start of the cycle is, primarily, from those industrial factories that spew air pollution from their smokestacks. The gases travel, in wind currents, thousands of miles, all over the planet. It, then, falls as precipitation into the world’s lakes, rivers, and oceans.
The mercury falls from the air and is first absorbed by the smallest creatures of the sea. They, in turn, are eaten by bigger marine animals and so on. As it moves up the food chain, the amount of mercury in the fish increases - along with the size of the fish. By the time is gets to the larger fish, like tuna or sharks, the mercury can reach high levels.
Fish is a common food staple in many countries around the planet, including the Americas. The annual per capita consumption of fish has grown steadily. Studies of the world's waterways have shown that mercury levels in fish continues to rise at a rapid rate.
There's a desperate need to clean up our bodies of water which will take a major global effort. And, its not happening fast enough. But, until conditions improve, you need to know how to protect your health and that of your family.
So, for now, the question remains - how can we enjoy eating fish and stay safe?