The map captures the countries and locations where ocean acidification (OA) activities are happening, as well as Global Ocean Acidification Observing Network Kit (GOA-ON) recipients, equipment, and methodologies used. Prepared by the Pacific Islands Ocean Acidification Centre (PIOAC) the map provides a preliminary view of the OA landscape in the Pacific Islands and Territories Ocean Acidification (PITOA) region of GOA-ON. This map is an excellent resource for scientists, policymakers, and anyone interested in learning more about OA activities in the Pacific Islands