Abstract
Ocean sustainability matters to everyone because planetary health depends on the ocean and a healthy ocean requires a sustainability transformation across society, land and sea. The ocean is a critical arena for addressing the triple planetary crisis of climate change, biodiversity loss, and pollution. Public engagement with ocean sustainability shows considerable potential to drive forward global sustainability action, as seen in contemporary concerns regarding marine plastic pollution rallying political leaders to develop a global plastics treaty. Despite this success, communities inland can still be much better connected to ocean sustainability and should be engaged to hold decision-makers to account for environmental and social progress alongside political interest in the growing ocean economy. Accessible and emotive messaging is required for public and political audiences, but delivery needs are complex, so we must ensure advances in public engagement are in tandem with translation into appropriate action. This Perspective recommends that we: (1) use a Rivers to Seas paradigm to better connect public support for ocean sustainability with land-based populations; (2) use accessible and emotive public messaging connected to detailed and complex delivery through principle-based approaches; and (3) create a UN Ocean Agency alongside the post-2030 sustainable development agenda to advance the changes needed.