In Senegal, despite the country's hundreds of kilometers of coastline, a recent report on marine pollution is likely to put you off going for a swim. The ocean around the Dakar peninsula is contaminated with traces of pollutants, often in significant quantities according to a recent study. One major cause is sewage due to just a single treatment plant in the capital - home to 20 percent of the country's population. The study was led by the civil society with the support of the Research Institute for Development (IRD), Greenpeace, the Pasteur Institute of Dakar and the Ministry of the Environment. While the situation puts the health of residents at risk, the biggest impact has been on the fisheries sector. But tourism could be next, if nothing is done. In Dakar, Sarah Sakho reports, with Emmanuelle Landais.