FILE - Debris flies into the air as foreign fishing boats are blown up by Indonesian Navy off Batam Island, Indonesia on Monday, Feb. 22, 2016, as authorities sank dozens of fishing boats caught operating illegally in Indonesian waters. Around the world, the ocean has become an expanding front in the armed conflict between nations over illegal fishing and overfishing, practices that deplete a vulnerable food source for billions of people worldwide. (AP Photo/M. Urip, File)