Eco-Tiles for Enhancing Marine Biodiversity


Eco-engineered tiles made of low pH eco-friendly concrete using recycled materials and incorporated with various microhabitats are suitable for different marine organisms to promote sustainable biodiversity on artificial seawalls.

  • Eco-Tiles for Enhancing Marine Biodiversity 0
  • Eco-Tiles for Enhancing Marine Biodiversity 1
  • Eco-Tiles for Enhancing Marine Biodiversity 2
Research completion
Commercialisation opportunities
Technology licensing agreement
Problem addressed

Due to the sea level rise driven by climate change, there is a demand in shore protection with increasing sea defence infrastructure. The prevalence and increased spread of artificial shorelines has become a major issue for coastal areas. The damage caused by artificial shorelines to the environment impacts the entire ecosystem, including the local water quality and fisheries. With future large-scale deployments, we can transform the barren seawalls of cities and ports into thriving, biodiverse ecosystems.

  • In contrast to the traditional seawalls commonly used around the world, the Eco-Tile encourages the growth of marine life and leads to a healthy ecosystem.
  • The crevices and holes of the Eco-Tile can harbour twice as many species as traditional seawalls, and are used by fish, crabs and oysters that can promote sustainable fishery resources. Also, filter feeders can filter organic matter from the water column, thereby improving the water quality.
  • The eco-friendly concrete of the Eco-Tile uses 20-40% recycled material, lowering the carbon footprint compared to traditional concrete. The Eco-Tile can be used to restore the seawalls of cities and ports and create healthy ecosystems.
Key impact
  • Eco-friendly concrete mix reduces carbon footprint by 20-40%
  • Increases the number of species by 2 times that of vertical seawalls
  • Microhabitats allow a biodiverse ecosystem to grow
  • Large-scale implementations can lead to a healthier ecosystem
  • 48th International Exhibition of Inventions Geneva (IEIG) - Gold Medal with Congratulations of the Jury
  • 48th International Exhibition of Inventions Geneva (IEIG) - Special Prize
  • Applicable to various types of seawalls and environments globally
  • Technology can be incorporated into any planned seawalls yet to be constructed


  • Patent (Filed) Priority No. 17/814,863 (USA)
City University of Hong Kong (CityU)

As one of the fastest growing universities in the world over the past decade, City University of Hong Kong (CityU) is recognised as a hub for innovation in research and professional education. CityU identifies solutions to critical global challenges by extending the frontiers of knowledge both within and beyond existing research paradigms.

The University’s highly qualified academics are drawn from all over the world, not only bringing a wealth of research and professional experience to the teaching programmes, but also contributing to the knowledge and technology advancement.