Dusk begins to fall as the waters near Moro Island, no longer blue, ripple and grow reddish, illuminated by the fast-setting sun. No large waves crash against the beach. The wind blows softly. This is the time, from August to November, when fishermen would normally haul in their biggest catches. But that was before. Two years ago, fishermen were well and truly spoiled by the sea: fish and shrimp were easy to catch.

"Before, during the peak f