Vanuatu banned single-use plastic bags, drinking straws and styrofoam food containers last July in a dramatic attempt to stem the flow of trash from the country’s coasts into the ocean. Prime Minister Charlot Salwai gave businesses and shoppers alike just a few months to prepare, and violators now face hefty fines between $175 and $900 an offense. Residents have been surprisingly receptive to the measure, and lawmakers are now preparing to restrict more disposable products, making one of the world’s toughest plastic bans even tougher.