Designed to mimic the root structure of native mangrove trees, the Living Seawall adds complexity to the existing seawall structure and provides a habitat for marine life. This aids biodiversity and attracts filter-feeding organisms that actually absorb and filter out pollutants – such as particulate matter and heavy metals – keeping the water ‘clean’. The more organisms we have, the cleaner the water. The Living Seawall is made up of 50 tiles designed to mimic the root structure of mangrove trees. The tiles are installed along an existing seawall structure in Sydney Harbour. Over time, the filter-feeding organisms colonize the wall. These organisms filter particles and pollutants out of the water. Researchers will monitor the Living Seawall for the next 20 years as it improves biodiversity and water quality.