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“It ain’t necessarily so” – A favored mantra recited by R. K. Trench in the context of “received truth,” or established beliefs; and the title of his unfinished autobiography. Professor Robert (Bob) Kent Trench’s research career brought together multiple disciplines in the study of mutualistic symbioses that are crucial to understanding the physiology, ecology, and co-evolution of metazoan and protist associations, many of which are beneficial to the Earth’s biosphere. Through the development and use of complementary techniques, he pioneered important discoveries about metabolically coupled interactions between “plants” and animals. Having grown up in Belize (formerly British Honduras), his journey in academia started at the University College of the West Indies (UCWI) on the island nation of Jamaica, then proceeded to the University of California, Los Angeles (USA); Oxford University (UK); and Yale University (Connecticut, USA). He was a longtime faculty member in the Department of Ecology, Evolution and Marine Biology at the University of California, Santa Barbara (Figs. 1a–f). Over the course of his life (August 3 1940–April 27 2021), he recognized that many things presented as fact were often accumulated dogma. His direct application of the scientific method ultimately helped to change these misconceptions. By deconstructing established ‘beliefs,’ he greatly improved our understanding of several mutualistic symbioses, and many of his insights and hypotheses published decades ago remain at the forefront of intense investigation to this day. 

Abstract Coral bleaching is the single largest global threat to coral reefs worldwide. Integrating the diverse body of work on coral bleaching is critical to understanding and combating this global problem. Yet investigating the drivers, patterns, and processes of coral bleaching poses a major challenge. A recent review of published experiments revealed a wide range of experimental variables used across studies. Such a wide range of approaches enhances discovery, but without full transparency in the experimental and analytical methods used, can also make comparisons among studies challenging. To increase comparability but not stifle innovation, we propose a common framework for coral bleaching experiments that includes consideration of coral provenance, experimental conditions, and husbandry. For example, reporting the number of genets used, collection site conditions, the experimental temperature offset(s) from the maximum monthly mean (MMM) of the collection site, experimental light conditions, flow, and the feeding regime will greatly facilitate comparability across studies. Similarly, quantifying common response variables of endosymbiont (Symbiodiniaceae) and holobiont phenotypes (i.e., color, chlorophyll, endosymbiont cell density, mortality, and skeletal growth) could further facilitate cross‐study comparisons. While no single bleaching experiment can provide the data necessary to determine global coral responses of all corals to current and future ocean warming, linking studies through a common framework as outlined here, would help increase comparability among experiments, facilitate synthetic insights into the causes and underlying mechanisms of coral bleaching, and reveal unique bleaching responses among genets, species, and regions. Such a collaborative framework that fosters transparency in methods used would strengthen comparisons among studies that can help inform coral reef management and facilitate conservation strategies to mitigate coral bleaching worldwide.