Mariama Sonko is an unstoppable force who continued her work even when she was ostracised by her community in Senegal
Outside Mariama Sonko’s home in the Casamance region of southern Senegal pink shells hang on improvised nets that will be placed in mangroves to provide a breeding spot for oysters.
Normally, women collecting oysters chop at the branches – a method that can harm the mangroves. But these nets allow them to harvest sustainably, says Sonko, who is trying to revolutionise agriculture in west Africa.