NRW Carmarthen Bay and Estuaries SAC sediments survey 2023 dataset https://portal.medin.org.uk/portal/start.php?tpc=007_NRW_DS161416 In Carmarthen Bay and Estuaries SAC the Annex I intertidal habitat features include: Mudflats and sandflats not covered by seawater at low tide. A series of 23 sediment monitoring locations, distributed around the SAC to represent different areas and habitats, were established between 2005 and 2008. Most locations were initially defined as transects (a line from upper to lower shore) but many have been redefined as clusters of stations (areas of shore). Between 1 and 6 sampling stations have been established (with fixed positions) within each of those locations, though some have required repositioning due to channel movements. These stations have been monitored using a combination of in-situ recording and sediment core sampling with laboratory analysis of infaunal composition and sediment granulometry. Some stations (those at Crofty and Llansteffan) are surveyed and sampled annually, others at intervals of 2 or more years. This description refered to data collected in 2023. 20251011 20240830