Kosi Bay is particularly famous for the traditional fish traps built to trap fish moving in and out of the estuary with the tide. The closest town is Manguzi, some 13km away from it. Kosi Bay estuary is only 2km from the Mozambique border. It is possible to walk from the estuary to Ponta da Oura in only an hour or so. It is one of the quietest beaches in South Africa.
Bird species in the area include the Palm-nut Vulture, White-backed Night-heron, and the kingfisher. Duiker, hippopotamus and crocodiles are also present, and loggerhead and leatherback sea turtles lay their eggs on the beach.