Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1375; Carmarthen Bay, Area in SqKm: 927, (06/06/2013 to 01/09/2013), Standard: IHO S44ed5 Order 1a. Contract: Shallow. FY 2012/13. Contractor: EMU.