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  • A summary account of the reefs of the Berwickshire and North Northumberland Coast cSAC and south Northumberland. This work brings together data from numerous acoustic surveys undertaken by SeaMap since 1993 and includes further survey work commissioned by English Nature during 1997 to complete the coverage of the cSAC. The area between Seahouses and Dunstanburgh Castle was singled out for detailed survey and analysis. Very different techniques have been used for littoral and sublittoral surveys and, in consequence, the resulting datasets are also very different in their nature. The techniques employed by SeaMap to collect data from the sublittoral have been based around an acoustic ground discrimination system (RoxAnn?).