2010 Scottish Natural Heritage (SNH) biological analyses of Marine Scotland Science (MSS) South Ronaldsay seabed camera survey dataset https://portal.medin.org.uk/portal/start.php?tpc=010_214434e3c5b45fa6936639badde9256a The purpose of this benthic survey off South Ronaldsay, Orkney, was to improve knowledge of the occurrence and distribution of species and habitats of recognised conservation importance, particularly priority marine features (PMFs), and to ground-truth multibeam data. An underwater video and still photograph survey was conducted by MSS for MSS on the 13th and 14th of September 2010 to collect detailed biological information on the seabed species and habitat features present. Drop-down video drift tows were undertaken at 21 sites in the area. The images, analysed under SNH contract by Dr Colin Moore, were used to describe the nature of the seabed in terms of the physical structure and the species assemblages. 20111231