"The largest, deepest and coldest Great Lake holds another distinction -- the highest levels of the contaminant toxaphene in the region and possibly anywhere in the world."

Eight eastern states warned against over-consumption of rockfish, bluefish, and other popular Atlantic Ocean species because of PCB contamination.

American shad are struggling with little success to make a comeback in Virginia's James River. Historically abundant, this "founding fish" disappeared for years because its spawning was blocked by dams.

"Federal officials, who have spent much of the last decade 'avoiding their obligations under the Endangered Species Act,' need a contingency plan to save the endangered fish, the judge says."

A million year old cycle of fish migration almost came to an end in the waters off of the nation’s capital. But a monumental conservation effort has brought the American Shad them back from the brink.