Clam Cleanup -- Biologists Clam Up Waterways To Determine Sources Of Pollution | Sizzlin' News |

"Biologists are able to determine the sources of toxins in water by using clams as pollutant traps. Clams naturally clean water by feeding absorbing toxins in their tissues as they draw in water. By placing the clams downstream of industrial parks and highways, they can be analyzed for pollutants. Biologists open the clams after exposure to these waters and detach them from their shells-- various lab tests reveal contaminants in the waterway."