Harbor porpoises ( Phocoena phocoena ) are among the most widespread cetacean species in Irish waters and are listed under Annex II of the EU Habitats Directive as a species of community importance. The local harbor porpoise population in Dublin Bay coexists with designated spoil grounds for dredging activity, which has increased due to Dublin Port's Alexandra Basin Redevelopment (ABR) project. This study examines the long‐ an...