EntityQ4178062· pop 7· linked from 8 articlesSupply ReefSign in to savesubmerged circular reef of volcanic origin in the Northern Mariana IslandsConnectionsNorthern Mariana IslandsEntityUnited StatesCountryvolcanoEntitygeographic coordinate systemEntitySmithsonian InstitutionEntityreefEntityseamountEntitysubmarine volcanoEntityMaug IslandsEntityNational Geospatial-Intelligence AgencyEntityGlobal Volcanism ProgramEntitylist of mountain typesEntityCategoriesFormer islands from the last glacial maximumGeography of the Northern Mariana IslandsReefs of the Pacific OceanReefs of the United StatesSeamounts of the Pacific OceanSubmarine volcanoesVolcanoes of the Northern Mariana Islands