2015 Joint Nature Conservation Committee (JNCC) and Centre for Environment, Fisheries and Aquaculture Science (Cefas) Monitoring Survey of Croker Carbonate Slabs cSAC/SCI (CEND2315) dataset https://portal.medin.org.uk/portal/start.php?tpc=010_b389ac6be7150737542a89e014784bce The monitoring survey of the Croker Carbonate Slabs candidate Special Area of Conservation (cSAC) and Site of Community Importance (SCI) was carried out from 24 October â?? 06 November 2015. There were four key aims of the survey 1 - Revisit sample stations where MDAC has been previously subject to 13C isotope analysis or stations where its presence was suggested from seabed imagery (potential MDAC) within the site boundary. 2 - Improve our knowledge of the distribution and spatial extent of MDAC within the site. 3 - Improve our knowledge of areas adjacent to site; confirm the presence of MDAC, map the finer spatial extent and gather more detailed information on biological communities. 4 - Characterise the wider sediment areas found within the site. A variety of data types were collected during the two-week survey including multibeam echosounder bathymetry and backscatter, sidescan sonar, EK60 echosounder, deep-tow boomer, high resolution video and stills, benthic samples and water samples. In addition, a pumped METS methane sensor was fitted to the camera drop-frame. This survey also carried out methane sampling, but only the biodiversity data is archived with the DAC (DASSH). 20200407 20151106