Melanie Bishop is a Marine Biologist at Macquarie University. She spent her childhood swimming and boating in Sydney Harbour and, wanting to ensure her children could have the same experiences, now does research to underpin the repair and restoration of degraded harbour habitats. She leads the Living Seawalls project, that is designing marine constructions for nature as well as people, and is at the forefront of the restoration of Australia’s lost shellfish reefs.