How Sydney Harbour's colourful seawalls could revive marine life

Scientists find colour influences the growth of marine invertebrates

Scientists have discovered that colourful concrete panels on urban seawalls can help revive marine biodiversity. An experiment by Macquarie University has revealed tiles of different colours can influence the growth of algae and barnacles on them, highlighting the importance of incorporating colour in marine construction.

How Sydney Harbour's colourful seawalls could revive marine life

A year-long experiment in Sydney's iconic harbour found algae and barnacles were more likely to grow on the seawall's colourful concrete panels versus the grey panels.