Filipinos in the island of Palawan are fighting to prevent an environmental catastrophe in their seas caused by cyanide fishing - a technique where cyanide is squirted on fish to stun and bag them. Since the dead ones are left to rot the corals gets irreversibly damaged. Now, Philippines' International Marine Life Alliance has begun campaigning against this practice, patrolling the beach at night, firing warning shots occasionally. Others are coordinating a poster campaign.