 This study examined the effect of varying levels of resolution in biophysical models on the connectivity of coral reefs. It was found that increasing the resolution of the model resulted in more complex and less directional dispersal patterns, as well as an increase in the number of connections among reefs. Additionally, virtual larvae tended to remain near their source reef for longer periods of time when the model had higher resolution, which led to greater local recruitment and self-recruitment for species with shorter pre-competence periods. However, only half of the reefs with the highest connectivity indicators were similar across all resolution models. Therefore, it is important to use models with appropriate resolutions when making reef management recommendations. This article was authored by Antoine Saint-Amand, Jonathan Lambrecht and Emmanuel Hannet.