A shark warning notice board is seen at Umgababa Beach near Durban, South Africa, on December 10, 2020. - A series of shark attacks in the 1950's made fear the worst for the coastal tourism industry in the KwaZulu-Natal province of South Africa, who attracts more than 6 millions visitors each year. To safeguard this tourism sector, authorities have adopted a shark control system largely criticised by environmentalists for its ecological danger. (Photo by Michele Spatari / AFP)