This dataset contains a collation of marine habitat and species biotope records created during contracts commissioned by Natural England; collected by Defra and associated bodies/agencies; or provided by third parties that have allowed their data to be republished under the Open Government Licence (OGL). There are two datasets available for download: 'Marine Habitats and Species Open Data' and 'Marine Designated Site Features Open Data'. The dataset 'Marine Habitats Species Open Data' comprises eight sub-datasets: three point datasets and five polygonal. These represent all publicly available datasets of marine habitats and species held by Natural England. The dataset 'Marine Designated Site Features Open Data' is a subset of the habitat and species data, which shows habitats and species (feature) data only within the site in which they are legally designated. The datasets comprises 6 sub-datasets: one point dataset and five polygonal. Both datasets are provided as an ESRI File Geodatabase (GDB) and as an OGC GeoPackage (GPKG). Additionally, 'Marine Designated Site Features Open Data' is provided with an ESRI structured layer file (LYR). All dataset geometry has been validated using the ESRI validation method. It has not been validated using the Open Geospatial Consortium (OGC) validation method and therefore may not comply with the OGC specification. These datasets are available under the Open Government Licence (OGL). Attribution statement: © Natural England; © Agri-Food & Biosciences Institute; © Alwyne Wheeler; © Bamber, R.; © Bangor University; © Blue Marine Foundation; © Boat Owners' Response Group; Contains British Geological Survey materials © UKRI [2021]; © Centre for Environment, Fisheries and Aquaculture Sciences; © Channel Coastal Observatory; © Chichester Harbour Conservancy; © Colin Little; © Conchological Society of Great Britain and Ireland; © Cornwall Inshore Fisheries and Conservation Authority; © Cornwall Wildlife Trust; © Countryside Council for Wales; © Crown Estate; © Department for Environment, Food & Rural Affairs; © Derek Goodwin; © Devon and Severn Inshore Fisheries and Conservation Authority; © Dipper, F.; © Dorset Wildlife Trust; © Dove Marine Laboratory; © E Hunter; © E.J. Allen; © Eastern Inshore Fisheries & Conservation Authority; © Eneco; © Environment Agency; © Environmental Records Centre for Cornwall and the Isles of Scilly; © Falmouth Harbour Commissioners; © Field Studies Council; © Fowler, S.; © Hampshire and Isle of Wight Wildlife Trust; © Harwich Haven Authority; © Helford Marine Conservation Group; © Institute of Estuarine and Coastal Studies; © Institute of Petroleum; © Isles of Scilly Wildlife Trust; © Jean-Claude Dauvin; © Joint Nature Conservation Committee; © Jon Moore; © Kent & Medway Biological Records Centre; © Kent Wildlife Trust; © M.V. Robins; Contains Marine Aggregate Levy Sustainability Fund materials © Crown Copyright [2021]; © Marine Biological Association; © Marine Conservation Society; © Marine Institute Ireland; © Marine Scotland; © MARLIN; © National Power; © National Trust; © Natural History Museum; © Natural Resources Wales; © Natural Resources Wales ; © Nature Conservancy Council; © Newcastle University; © North West Water; © Orton, J.H.; © Plymouth Marine Laboratory; © Porcupine Marine Natural History Society; © Portsmouth University; © R Witbaard; © Scottish Environment Protection Agency; © Scottish Natural Heritage; © Seasearch; © Southern Water Services; © St Mawes Harbour Conservation Trust; © Tarmac Lefarge; © The Wildlife Trusts; © Tompsett, P.; © Unicomarine Ltd; © UNEP-WCMC, World Atlas of Seagrasses (2008). Cambridge (UK): UN Environment World Conservation Monitoring Centre. Latest version of Data at DOI: https://doi.org/10.34892/x6r3-d211; © University of Plymouth; © Welsh Water Authority; © Widdicombe, S.; © Wilson, P. & Wilson, P.;