A South Korean mayor who dumped a tonne of trash on a clean beach to give environmental campaigners something to pick up has said sorry for his deception. Officials trucked in litter and waste that had already been collected from rubbish-strewn coasts, and scattered it all over the pristine sand of southwest Jindo. The following day hundreds of volunteers scoured the shores and bagged up the garbage as part of an event to mark International Coastal Cleanup Day, a global event aimed at countering the scourge of sea-borne waste.