Field surveys were conducted on Sena and Goa Islands, located at the entrance of Mossuril Bay in Nampula Province, to collect biodiversity data and assess their potential qualification as Key Biodiversity Areas (KBAs). The surveys focused on improving knowledge of the distribution, abundance and conservation status of species occurring on these small coral islands, which represent one of the most important examples of coral rag thicket habitat along the northern coast of Mozambique.

The expedition was led by researchers from WCS Mozambique and the Institute for Agricultural Research of Mozambique (IIAM) and took place in July 2026. The team carried out systematic surveys across the islands, documenting flora and fauna, mapping habitats, and collecting information required for KBA assessments and IUCN Red List evaluations.

Particular attention was given to several plant species of high conservation importance, including the endemic species Euphorbia angularis and the near-endemic threatened species Barleria setosa and Barleria laceratiflora. Data on their distribution, population size and habitat condition were collected to support assessments against the Global KBA Standard.

In addition to documenting priority plant species, the surveys recorded information on reptiles, invertebrates and birds, associated with these coastal island ecosystems. The team also assessed habitat integrity and identified potential threats that could affect the long-term persistence of species and ecosystems on the islands.