Saving the Oceans

World’s Fish Migrating to Cooler Waters

William Cheung, Daniel Pauly and their colleagues at the University of British Columbia looked at 52 distinct marine ecosystems that cover most of the world’s coastal and shelf areas. Even after accounting for the impact of fishing and wide variations in the oceans that cover 71 percent of the planet, water temperatures rose steadily each decade between 1970 and 2006.