Organisations that effectively establish relationships and connections among stakeholder groups play a crucial role in facilitating successful knowledge sharing at the science-policy interface. We present two case studies from coastal communities in Western Australia to reflect on the role of an established boundary-spanning organisation, WAMSI, in facilitating stakeholder engagement among community members, researchers, and decision-makers. We describe this experience and argue that stakeholders are more likely to actively participate in marine management processes if they believe their views and values are being considered by decision-makers. In the case studies explored, a trusted broker (WAMSI) is perceived as having developed and maintained a high level of salience, legitimacy and credibility across multiple stakeholder groups. In the remote communities of Shark Bay and Exmouth Gulf, we facilitated a knowledge synthesis process between managers, researchers, Traditional Owners, industry and the community. Stakeholders were then re-approached to undertake a comprehensive electronic prioritisation survey of knowledge gaps. Participation was significant for these coastal communities, underscoring the importance of organisational capability for understanding and maximising community involvement. The results highlighted the influence of stakeholder input in decision-making and have guided decision-makers of the essential research required following significant climate events and a marine park proposal