4f4c4942-4343-5764-6473-313631333535 English Natural Resources Wales Maes y Ffynnon Bangor LL57 2DW Wales opendata@cyfoethnaturiolcymru.gov.uk 2025-12-19T13:51:22.637Z NRW 1.0 wel British National Grid (EPSG:27700) Welsh Acoustic Marine Mammal Survey (WAMMS) Welsh Acoustic Marine Mammal Survey (WAMMS) 2025-04-11 2025-04-11 NRW_DS161355 The Welsh Acoustic Marine Mammal Survey (WAMMS) aim was to develop an effective and robust method for measuring underwater noise and the occurrence of cetaceans (whales, dolphins and porpoises) in marine protected areas (MPAs) around the Welsh coastline. To test and demonstrate these monitoring methods, an 18-month pilot study was undertaken as part of the project in the North Anglesey Marine Special Area of Conservation (SAC). As well as illustrating how monitoring could be carried out elsewhere in Welsh marine waters, this pilot study provided baseline data on ambient noise and marine mammal detections at the site. Three monitoring locations were selected within the North Anglesey Marine SAC: one at Holyhead deep, two off Point Lynas and one situated 1.7km off the coast and the other 5.2 km, at the boundary of the SAC. The Welsh Acoustic Marine Mammal Survey (WAMMS) aim was to develop an effective and robust method for measuring underwater noise and the occurrence of cetaceans (whales, dolphins and porpoises) in marine protected areas (MPAs) around the Welsh coastline. To test and demonstrate these monitoring methods, an 18-month pilot study was undertaken as part of the project in the North Anglesey Marine Special Area of Conservation (SAC). As well as illustrating how monitoring could be carried out elsewhere in Welsh marine waters, this pilot study provided baseline data on ambient noise and marine mammal detections at the site. Three monitoring locations were selected within the North Anglesey Marine SAC: one at Holyhead deep, two off Point Lynas and one situated 1.7km off the coast and the other 5.2 km, at the boundary of the SAC. Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Centre for Environmental Fisheries and Aquatic Sciences (CEFAS) Centre for Environmental Fisheries & Aquatic Sciences, Burnham Laboratory, Remembrance Avenue, BURNHAM ON CROUCH, Essex, CM0 8HA helpline@defra.gsi.gov.uk University of Wales, Bangor. School of Ocean Sciences Bangor, Gwynedd, LL57 2DG oss011@bangor.ac.uk http://www.bangor.ac.uk The Crown Estate The Crown Estate, 1 St James's Market, London, SW1Y 4AH enquiries@thecrownestate.co.uk The Crown Estate The Crown Estate, 1 St James's Market, London, SW1Y 4AH enquiries@thecrownestate.co.uk Species distribution GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme There are no access restrictions on this data. NRW may release, publish or disseminate it freely. noLimitations © CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose. © CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose. Open Government Licence English oceans biota Wales (WLS) -4.868 -4.1888 53.2854 53.4967 SIR YNYS MON - ISLE OF ANGLESEY 2023-05-08 2024-11-04 Putland, R., Merchant, N., Veneruso, G. (2023). Welsh Acoustic Marine Mammal Survey (WAMMS) Methodology Report title. Cefas Project Report for Natural Resource Wales, 26 pp. Merchant, N.D., Putland, R., Roberts, G., Veneruso, G. 2025 Welsh Acoustic Marine Mammal Survey (WAMMS) Final Field Report and Data Analysis. NRW [Report Series] Report No: 860, Natural Resources Wales, Bangor Documents NRW Evidence Report in word or pdf format Database Data recorded stored in the crown estate marine data exchange. Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 This dataset has not been assessed for conformance to the referenced INSPIRE regulation. false At the three proposed monitoring locations, underwater noise data will be collected using the latest generation of Soundtraps (ST600HF, Ocean Instruments NZ) as well as click detector FPODs (Chelonia). Equipment will be deployed over an 18-month field season (May 2023 – November 2024) to better understand ambient noise levels and cetacean presence in the North Anglesey Marine SAC. Further details on the methodology report can be seen in the 2023 Welsh Acoustic Marine Mammal Survey (WAMMS) Methodology Report. At the three proposed monitoring locations, underwater noise data will be collected using the latest generation of Soundtraps (ST600HF, Ocean Instruments NZ) as well as click detector FPODs (Chelonia). Equipment will be deployed over an 18-month field season (May 2023 – November 2024) to better understand ambient noise levels and cetacean presence in the North Anglesey Marine SAC. Further details on the methodology report can be seen in the 2023 Welsh Acoustic Marine Mammal Survey (WAMMS) Methodology Report.