Toxic Water Mussels
In this Monday, Dec. 28, 2009 photo, Dominic Gregorio from the State Water Resources Control Board, shows a mussel from the bay on Treasure Island, near San Francisco. California scientists hope studying 180 black mussels pried from algae-covered rocks in San Francisco Bay will provide clues into how many drugs and chemicals are polluting waters across the nation. Regulators are concerned about an array of chemicals and pharmaceuticals that can accumulate in the tissue of animals and people. (AP Photo/Russel A. Daniels)
Copyright 2009 AP News
