Inshore dolphins are among the most vulnerable marine mammals globally due to restricted distributions, strong dependence on coastal habitats, and exposure to cumulative anthropogenic pressures. Australian humpback (Sousa sahulensis) and snubfin (Orcaella heinsohni) dolphins are listed as Vulnerable on the IUCN Red List and under the EPBC Act 1999 due to small, localised subpopulations and inferred ongoing population declines. Despite advances in our understanding of their ecology, several key populations and habitats remain poorly characterised, limiting effective management and conservation. This project investigates the ecology of humpback and snubfin dolphins in Repulse Bay, a potential hotspot for both species in central Queensland within the Great Barrier Reef Marine Park. Using systematic boat-based surveys, photo-identification, drone observations, and environmental and benthic habitat data, this research will estimate their demographic characteristics, distribution, habitat use, behavioural budget, social structure and body condition. By integrating demographic characteristics with spatial and behavioural data across multiple seasons, the project aims to improve understanding of how inshore dolphins respond to environmental variability. This study will provide an ecological baseline for inshore dolphins in Repulse Bay, directly addressing priority knowledge gaps identified under national conservation frameworks and supporting evidence-based management and marine spatial planning.