The Portuguese navigator Diogo C�o reached Cape Cross, north of the bay, in 1485.There followed Bartolomeu Dias, who anchored his flagship S�o Crist�v�o in what is now Walvis Bay on 8 December 1487, on his expedition to discover a sea route to the East via the Cape of Good Hope. He named the bay "O Golfo de Santa Maria da Concei��o." However, the Portuguese did not formally stake a claim to Walvis Bay.
The Herero called the place Ezorongondo. Little commercial development occurred on the site until the late 19th century. During the scramble for Africa, the United Kingdom occupied Walvis Bay and a small area surrounding the territory, and permitted the Cape Colony to annex it in 1878, both to forestall German ambitions in the region and to ensure safe passage of British ships around the Cape (Walvis Bay was the only known natural harbour on the Namibian coast). The Cape government, correctly predicting a German invasion of the region and desiring protection for its Griqualand diamond fields, originally requested permission to incorporate the whole of South West Africa, but this was blocked by Britain. Consequently when the Germans later colonized the region, only Walvis Bay remained as an enclave out of its control. In 1910, Walvis Bay, as well as the Cape Colony, became part of the newly formed Union of South Africa. However, a dispute arose with Germany over the enclave's boundaries. This was eventually settled in 1911 and Walvis Bay was allocated an area of 434 square miles (1,124 km2).
The enclave was overrun by the Germans during the South-West Africa Campaign early in World War I. But South African Forces eventually ousted the Germans in 1915 and Walvis Bay was quickly integrated into the new martial law regime established in South-West Africa. South Africa was later awarded control (a "C" class mandate) over South-West Africa by the League of Nations to administer SWA as an integral part of South Africa. Civilian rule was
