The Northeast Coastal Acidification Network (NECAN) is the leading group in the region for the synthesis and dissemination of ocean and coastal acidification information. Established under the Northeastern Regional Association of Coastal Ocean Observing Systems (NERACOOS) in 2013, NECAN is a partnership among government agencies, industry members, and the scientific community. NECAN serves as a conduit through which decision makers and stakeholders can provide guidance for regional research and monitoring. The NECAN region encompasses the coastal ocean from the high-water line out to the shelf-break from Long Island Sound to Nova Scotia.