20230517 11225400 1.0 TRUE Major Geomorphological Structure The benthic habitat map created by the Biogeography Branch was classified into major and detailed geomorphological structure classes. Major Structure refers to a feature's dominant physical composition. The Major Structure class is classified as Coral Reef and Hardbottom, Unconsolidated Sediments, Other Delineations (land or man-made features) or Unknown. This information was determined by analyzing remotely sensed imagery and underwater videos. NOAA/NOS/NCCOS/CCMA/Biogeography Branch