Southwest of the lagoon is this 3500-hectare saltpan complex, which currently supplies over 90% of South Africa's salt. As with the one in Swakopmund, these pans concentrate salt from seawater with the aid of evaporation. They are also a rich feeding ground for shrimp and larval fish. One of the three wetlands around Walvis Bay, which together form Southern Africa's single most important coastal wetland for migratory birds.