Location of bottom still imagery along with images collected during field activity 2011-015-FA by the U.S. Geological Survey and Massachusetts Office of Coastal Zone Management offshore of Massachusetts around Cape Cod and the Islands in September 2011 (JPEG images, point shapefile, and CSV file)

Accurate data and maps of sea-floor geology are important first steps toward protecting habitat, delineating marine resources, and assessing environmental changes due...精准的海底地质（sea-floor geology）数据与专题图件，是开展栖息地保护、划定海洋资源分布范围以及评估相关环境变化的至关重要的前置步骤。