St. Brandon in the context of "Outer Islands of Mauritius"

Mauritius, officially the Republic of Mauritius, is an island country in the Indian Ocean, about 2,000 kilometres (1,100 nautical miles) off the southeastern coast of East Africa, east of Madagascar. It includes the main island (also called Mauritius), as well as Rodrigues, Agaléga, St. Brandon (Cargados Carajos shoals) and the Chagos Archipelagos. The islands of Mauritius and Rodrigues, along with nearby Réunion (a French overseas department), are part of the Mascarene Islands. The main island of Mauritius, where the population is concentrated, hosts the capital and largest city, Port Louis. The country spans 2,040 square kilometres (790 sq mi) and has an exclusive economic zone covering approximately 2,000,000 square kilometres (580,000 square nautical miles).

The 1502 Portuguese Cantino planisphere has led some historians to speculate that Arab sailors were the first to discover the uninhabited island around 975, naming it Dina Arobi. Called Ilha do Cirne or Ilha do Cerne on early Portuguese maps, the island was visited by Portuguese sailors in 1507. A Dutch fleet, under the command of Admiral Van Warwyck, landed at what is now the Grand Port District and took possession of the island in 1598, renaming it after Maurice, Prince of Orange. Short-lived Dutch attempts at permanent settlement took place over a century aimed at exploiting the local ebony forests, establishing sugar and arrack production using cane plant cuttings from Java together with over three hundred Malagasy slaves, all in vain. When French colonisation began in 1715, the island was renamed "Isle de France". In 1810, the United Kingdom seized the island and under the Treaty of Paris, France ceded Mauritius and its dependencies to the United Kingdom. The British colony of Mauritius now included Rodrigues, Agaléga, St. Brandon, the Chagos Archipelago, and, until 1906, the Seychelles. Mauritius and France dispute sovereignty over the island of Tromelin, the treaty failing to mention it specifically. Mauritius became the British Empire's main sugar-producing colony and remained a primarily sugar-dominated plantation-based colony until independence, in 1968. In 1992, the country abolished the monarchy, replacing it with the president.

Isle de France (Modern French: Île de France, pronounced [il də fʁɑ̃s] ) was a French colony in the Indian Ocean from 1715 to 1810, comprising the island now known as Mauritius and its dependent territories. It was governed by the French East India Company and formed part of the French colonial empire. Under the French, the island witnessed major changes. The increasing importance of agriculture led to the "import" of slaves and the undertaking of vast infrastructural works that transformed the capital Port Louis into a major port, warehousing, and commercial centre.

During the Napoleonic Wars, Isle de France became a base from which the French navy, including squadrons under Rear Admiral Linois or Commodore Jacques Hamelin, and corsairs such as Robert Surcouf, organised raids on British merchant ships. The raids (see Battle of Pulo Aura and Mauritius campaign of 1809–1811) continued until 1810 when the British sent a strong expedition to capture the island. The first British attempt, in August 1810, to attack Grand Port resulted in a French victory, one celebrated on the Arc de Triomphe in Paris. A subsequent and much larger attack launched in December of the same year from Rodrigues, which had been captured a year earlier, was successful. The British landed in large numbers in the north of the island and rapidly overpowered the French, who capitulated (see Invasion of Isle de France). In the Treaty of Paris (1814), the French ceded Isle de France together with its territories including Agaléga, the Cargados Carajos Shoals, the Chagos Archipelago, Rodrigues, Seychelles, and Tromelin Island to the United Kingdom. The island then reverted to its former name, 'Mauritius'.

Agaléga (French: îles Agaléga) is a dependency of Mauritius, as defined by the Constitution of Mauritius, which consists of two outer islands located in the Indian Ocean, about 1,050 km (650 mi) north of Mauritius Island.

Similar to other Mauritian islands such as St. Brandon, Agaléga is run directly by the Prime Minister of Mauritius through the Prime Minister's Office to the Outer Island Development Corporation (OIDC). The population of the islands rose from 289 in 2011 to 330 in 2022.

The red-footed booby (Sula sula) is a large seabird of the booby family, Sulidae. Adults always have red feet, but the colour of the plumage varies. They are powerful and agile fliers, harnessing the wind to fly efficiently, but they are clumsy in takeoffs and landings. They forage by catching flying fish from above the ocean's surface and by performing shallow dives. They are found widely in the tropics, and breed colonially in coastal regions, especially isolated islands such as St. Brandon, Mauritius (Cargados Carajos shoals), and the Chagos Archipelago. Although its population is declining, it is considered to be a least-concern species by the International Union for Conservation of Nature (IUCN). It faces threats from climate change, competition with fisheries, human disturbance, and invasive species.