Across the world, rising sea levels have become a pressing issue for coastal communities. Driven by our changing climate, sea level rise is already having a range of impacts, from increased flooding to the salinization of freshwater resources. To discuss this growing threat, Ben Goldson speaks to Professor Karin Bryan from the University of Auckland’s School of Environment; Professor William Glamore from the University of New South Wales’ School of Civil and Environmental Engineering; and Dr Richard Bulmer, the director of private consultancy group Tidal Research.