By Rachael Bale | National Geographic | August 29, 2016 PUERTO PRINCESA, PHILIPPINESYears ago Christopher Tubo caught a 660-pound blue marlin in the South China Sea. The fishing was good there, he says. Tuna fishermen would come home from a trip with dozens of the high-value fish as well as a good haul of other species. … Continue reading One of the World’s Biggest Fisheries Is on the Verge of Collapse