Southwest of the lagoon is this 3500-hectare salt-pan 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. It's one of the three wetlands around Walvis Bay (along with the lagoon and Bird Island), which together form Southern Africa's single most important coastal wetland for migratory birds.