CV20016 , the underwater television (UWTV) survey of abundance and distribution of Nephrops in the Celtic Sea Nephrops Grounds took place in June/July 2020 in the North East Atlantic Ocean on board the R.V. Celtic Voyager. All planned UWTV stations were surveyed successfully in the, Aran grounds and Galway Bay. Three stations were not surveyed in the Porcupine grounds. 30 hours of downtime was experiences due to poor weather conditions. Day grab samples were also collected for the Infomar seabed mapping project and for Galway Mayo Institute of Technology's (GMIT). Nephrops underwater television surveys are under the Data Collection Scheme, established under the European Union's (EU) Union Priority 3 (Fostering the Implementation of the Common Fisheries Policy) of Ireland’s Operational Programme which co-funded under the European Maritime and Fisheries Fund by the Irish Government and the EU. This dataset is used to assess the abundance of Nephrops norvegicus stock and provide management advice.