Biophysical environment

The Western Indian Ocean contains 16% of the world’s coral reefs, and the region is now thought to host the second peak of coral reef biodiversity globally. Coral reef ecosystems underpin the economies of the countries in the region, particularly fisheries and tourism sectors, and provide livelihood opportunities and income for local communities.

Countries in the Western Indian Ocean are endowed with coastal and marine ecosystems rich in biodiversity and luxuriant resources that are important to the wellbeing of their people. However, these resources are under pressure from a variety of natural and man-made factors, including; resource overexploitation, pollution, unplanned coastal development and climate change. Marine litter is becoming a significant contributor to marine pollution in the World Oceans and Western Indian Ocean (WIO), is not exempt. Over 80% of marine pollution that constitute marine litter