The Hong Kong Polytechnic University PhD candidate Mr Dean Chan has won the James Dyson Award 2025 (Hong Kong) for his innovative 3D-printed oyster reef, designed to address its declining trend in the region while enhancing marine biodiversity. The invention will progress to the international stage of the James Dyson Award, for a chance to win £30,000.
The project, named “Reef of Hope,” features an innovative topological design and uses a printing substrate infused with oyster shell calcium carbonate to help restore oyster reefs, more than 85% which have disappeared globally in recent decades, due to pollution, overharvesting and urban development.
Reef of Hope is designed and engineered to actively support and sustain marine life. Its innovative topological structure features a curved, porous geometry that enhances stability in water, improves material efficiency, and optimises water flow.
The project already conducted field trials along Hong Kong’s shoreline, demonstrating significant environmental benefits. Oyster settlement rates were three times higher than those achieved using traditional methods. Within one month, the reef attracted shrimp, small crabs, juvenile fish, and algae, indicating a positive impact on local biodiversity.
For more: Reef of Hope – AR for Oyster Reef Restoration
