Hong Kong may be small in land area, but its coastline tells a different story. This extensive and winding shoreline cradles a rich tapestry of marine life, from vibrant coral reefs to lush mangroves. However, this aquatic wonderland now faces mounting challenges due to rapid urban growth and pollution. At PolyU, researchers are making waves in marine conservation and sustainable aquaculture.

The HKSAR Government has implemented various measures to protect marine ecosystems. Complementing these efforts, Dr James Fang Kar-hei, Associate Professor of PolyU’s Department of Food Science and Nutrition, stated in his recent article in Sing Tao Daily News that PolyU researchers are actively researching innovative solutions for marine conservation and sustainable aquaculture, addressing the United Nations’ Sustainable Development Goal 14.

PolyU’s research team has employed advanced techniques, including Raman microspectroscopy, to study microplastic pollution in marine life. Recent findings suggest that Hong Kong residents may ingest up to 10,380 microplastic particles annually through mussel consumption alone. This intake rate is approximately five times higher than in other Asian and European regions, as confirmed by human faecal analysis. The research team is now exploring potential health impacts and investigating methods to remove microplastics from seawater using bubble barriers and bacterial biofilms.

Another key initiative of the PolyU research team focuses on rebuilding pearl oyster reefs in the Tolo Channel. These ecosystems, once abundant in Hong Kong, significantly improve water quality and support biodiversity. Using cultivated oysters and 3D technology, the team is tracking the reefs’ impact on local marine life. This project also collaborates with local fishermen to support sustainable aquaculture practices and revitalise the pearl industry.

While Hong Kong’s marine environment faces considerable challenges, it also presents immense opportunities for scientific research. By fostering collaboration between government, academia, businesses, and citizens, we can drive conservation through research, innovation, and education, ultimately fostering environmental responsibility and sustainable ecosystems.

Please visit the following to learn more about PolyU's research work in pioneering marine conservation and sustainable aquaculture:

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Sing Tao Daily News