The Primeiras and Segundas Archipelago is a chain of 10 sparsely inhabited barrier islands and two coral reef complexes situated in the Indian Ocean off the coast of the Zambezia Province of Mozambique.

[2] Due to the lack of reliable sources of fresh water, habitation on the islands is sparse — mainly in support of fishing operations.

[4] The islands became an important stopping-off point for Portuguese trading fleets sailing for India and the Orient, which were often in need of emergency repairs after rounding the Cape of Good Hope.

The archipelago was the focus of joint conservation and development projects by CARE and the World Wildlife Fund in cooperation with the government of Mozambique and local NGOs between 2008 and 2018.

These projects were aimed at preserving the environment and surrounding coral reef system, restoring fisheries, protecting breeding grounds for sooty terns, dugongs and green sea turtles, and creating a better quality of life for the people of the region.