A one-day workshop was convened to develop International Quiet Ocean Experiment (IQOE) program guidelines for measuring, processing, and reporting of ocean sound levels. Fifteen international experts came together from eight countries to discuss current practices for measuring, processing, and reporting ocean sound levels from existing long-term monitoring projects and to recommend key consensus parameters for ocean sound level measurements designed to facilitate cross-project comparisons. The workshop product is a meeting report that includes recommendations directed to ocean sound research programs, sponsoring international organizations, and/or their science advisory groups to support the development and implementation of ocean sound processing reporting guidelines needed to make meaningful soundscape comparisons across time, space, and monitoring programs. The ocean community is challenged on how to best monitor and compare soundscapes over time and space to appropriately interpret change and impact when ...