** ADVANCE FOR SUNDAY, APRIL 1 ** FILE ** A fisherman stands on a basket of nets aboard his ship as a group of North Sea fishing boats pull in to anchor in the Port of Antwerp, Belgium, Dec. 10, 2003. North Sea fisherman gathered in Antwerp to protest proposed EU cuts on commercial catches of cod, hake and other dwindling varieties. Overfishing has cut deeply into the North Sea's cod population in recent decades, and scientists now say this important food fish faces a second challenge _ climate change. (AP Photo/Virginia Mayo)