Northern Australia’s tropical seagrass meadows are widespread, highly diverse and ecologically, culturally and economically significant. The remote nature of these meadows has led to an often limited, and fragmented, understanding of these systems. Monitoring key habitats, like seagrasses, is increasingly being led by Indigenous Ranger groups. The collection of environmental data needs to occur consistently and reliably across Australia to ensure a good understanding of the status and trends of ecosystems. This poster introduces our NESP project, focused on the co-development of a seagrass monitoring toolkit with Indigenous Ranger groups in northern Australia which will aid in the consistent and reliable collection of environmental data. In collaboration with four Indigenous Ranger groups across Western Australia, the Northern Territory and Queensland, we are co-developing training materials focused on seagrass identification and standardised monitoring techniques. These training materials will be specifically tailored to diverse Sea Country environments, ranger resources, and monitoring questions. Through these training materials, Indigenous Rangers will be empowered to collect and interpret data critical for managing these ecosystems, ensuring consistent and reliable data collection to support conservation and management efforts. This work aligns with national conservation goals by supporting Indigenous-led research efforts and by improving environmental data quality.