Hazardous and Noxious Substances (HNS) in the marine environment: Prioritizing HNS that pose major risk in a European context

► A weight-of-evidence approach to select priority HNS that are likely to cause adverse effects to marine environment. ► Prioritization methodology for selecting HNS using a combination of key risk criteria. ► Prioritizing HNS: an essential step towards a more effective HNS spills preparedness and response. ► Screening analysis of toxicological information for priority HNS.