Cambodia volunteers step up battle against illegal fishing

SEH ISLAND, Cambodia -- It is late afternoon when Paul Ferber scans the horizon and detects his number one enemy -- approaching Vietnamese seine trawlers. He knows that their kilometers long, fine mesh, bottom-dragging nets will in just one or two passes sweep away years of conservation efforts. "Dolphins, turtles, tiny sea creatures, seagrass -- there's no way anything can escape,'' he says.