 The paper reviews the current state of knowledge on the distribution of corals in marginal and extreme environments, including latitudinal extremes, shallow reef systems, and reef-neighboring environments such as upwelling in CO2 vent sites. The authors also conduct a synthesis of abiotic data collected at these systems to provide a collective assessment of the range of extreme conditions under which corals currently persist. The paper highlights that corals can persist in suboptimal physical-chemical conditions and identifies commonalities in coral taxa able to do so. It also provides evidence for key mechanisms required to support survival and or persistence under such conditions. The authors suggest that extreme and marginal coral environments may provide potential refugia under changing environmental conditions and outline priority areas for future research on these environments. They also discuss additional management options that could be provided by these environments, such as genetic stocks of stress-tolerant corals to support proactive management strategies. This article was authored by Emma F. Camp, Verena Shope, Peter J. Mumby, and others. We are article.tv. Links in the description below.