Marine Environment: Research Project to monitor Microplastics in Mauritian Waters

The Mauritius Oceanography Institute (MOI) is intensifying its efforts to monitor and combat marine plastic pollution through the implementation of the second phase of a research project geared at assessing microplastics in Mauritian waters. Funded by the National Environment Fund, the initiative seeks to beef up national capacity for monitoring microplastics and to better understand their accumulation in the marine environment.

As part of the project, two offshore observatories have been established at Albion and Belle Mare, where seawater samples are collected regularly to monitor microplastic levels and track changes over time. The continuous monitoring programme generates valuable scientific data that support informed decision-making and contribute to the protection of the marine environment.

To reinforce its research capabilities, the MOI has acquired a state-of-the-art Fourier Transform Infrared (FTIR) Microscope. This advanced equipment enables scientists to identify and characterise different types of microplastics through their unique chemical signatures, providing crucial information on the sources and composition of plastic pollution. Such findings can be useful to policymakers and stakeholders in their drive to improve waste management practices, strengthen recycling programmes and develop more effective environmental policies.

Preliminary results emanating from the project have confirmed the presence of microplastics in seawater, beach sediments and coral species. Transparent fibres were identified as the most common form of microplastic, while several polymer types commonly used in consumer products were also detected. Laboratory analyses using FTIR technology confirmed the presence of polypropylene in collected samples.

According to the Director of the MOI, Dr Daniel Marie, the detection of microplastics in corals highlights the extent to which plastic pollution has infiltrated sensitive marine ecosystems. The Institute has been conducting research on microplastics since 2017, carrying out sampling exercises on beaches, lagoons and offshore areas to better understand the occurrence and distribution of these particles in Mauritian waters, he said.

Plastic pollution is recognised globally as one of the major threats to marine biodiversity and human well-being. Larger plastic items gradually break down into microplastics measuring between 5 millimetres and 1 micrometre, which have been found in the environment, food chains, water supplies and even the human body. According to the World Economic Forum, around 130 million tonnes of plastic waste are improperly managed each year, resulting in significant pollution of terrestrial and marine ecosystems.

As a Small Island Developing State, Mauritius depends heavily on healthy oceans for food security, tourism, economic development and biodiversity conservation. Through its ongoing research and monitoring activities, the MOI is contributing to a better understanding of marine plastic pollution while supporting national efforts to safeguard marine resources for present and future generations. The project also aligns with the achievement of the United Nations Sustainable Development Goal 14, which focuses on the conservation and sustainable use of oceans, seas and marine resources.

12 June 2026

Email: gis@govmu.org

Website: https://gis.govmu.org

Mobile App: GIS News

Topics: Environment, Maritime