Volunteers clean up a beach in Dakar as part of World Clean-up In Dakar, volunteers and employees of the Senegalese national office of sanitation (ONAS) carry out a symbolic cleaning operation of part of Hann bay, one of the most polluted beaches of the capital. The day before, a financing agreement of 20 millions euros was signed between the Senegalese government and the Dutch cooperation for an important project to clean-up the bay. The clean-up project is expected to start by the end of this year and take between three and five years to complete, according to officials.