The Traditional Owners have been caring for Country for thousands of years, however are still often excluded from many modern conversations surrounding ecological management. The Birrigan-Gargle Local Aboriginal Land Council (LALC) have partnered with the Sydney Institute of Marine Science (SIMS) to co-design, and be guided by Indigenous priorities in, biodiversity monitoring and coastal management plans along the Yamba Breakwall in the Biirrinba (Clarence River Estuary). The breakwall is just one example of hardened infrastructure resulting in habitat loss due to urbanisation, but the estuary grounds in particular were vulnerable to this anthropogenic change as it is nursery habitat. The breakwall has recently had Living Boulders installed, which are an eco-engineering approach to reintroduce habitat complexity and water retention in intertidal zones. The placement of the boulders was decided in collaboration, and the ongoing monitoring will be done by both organisations in a way that respects Indigenous data sovereignty. The co-design allows for knowledge sharing and for the cultural knowledge to be recognised with as much credibility as the scientific data.