The Ocean Changemakers Challenge seeks business solutions to ocean-related sustainability challenges. The challenge is aimed at early-career researchers and professionals, entrepreneurs and innovators with solutions to ocean challenges, e.g. marine pollution, overfishing and overexploitation of marine resources, unsustainable aquaculture, or destruction of ocean habitats. Three finalists will receive guidance from renowned ocean leaders as part of a 12-month mentorship program and present their business idea for a blue economy at the World Ocean Tech and Innovation Summit in Canada (October 2022). Entries close on 19 August 2022. Next steps