Marine Non Native Species records from Natural Resources Wales (NRW) Monitoring Research and Ad-hoc Sightings

This dataset comprises of marine surveys undertaken by the Natural Resources Wales (NRW) (and former Countryside Council for Wales) for Marine non-native species, currently held in Marine Recorder. The surveys represent on-going non-native monitoring, sightings and ad-hoc records of invasive and non-native species supplied to Natural Resources Wales (NRW) or noted outside of other research and monitoring work.