National marine sanctuary offices and visitor centers closed to the public; waters remain open

NOAA's national marine sanctuary offices and visitor centers are closed to the public while the waters remain open for responsible use in accordance with CDC guidance and local regulations. More information on the response from NOAA's Office of National Marine Sanctuaries can be found on sanctuaries.noaa.gov/coronavirus/.

Skip to main content
Monterey Bay National Marine Sanctuary National Marine Sanctuaries Home Page National Oceanic and Atmospheric Administration Home Page

Quick Facts: The Sanctuary at a Glance

  • Northern Boundary: Rocky Point, 7 miles north of Golden Gate Bridge.
  • Southern Boundary: Cambria, San Luis Obispo County.
  • Seaward Boundary: Average of 30 miles offshore (and as far as 53 miles offshore).
  • Shoreward Boundary: Mean High Tide.
  • Shoreline Length: 276 Statute Miles (almost exactly, which is about one quarter of California's coast!)
  • Size: 6,094 square statute miles or 4,601 square nautical miles—about the size of Connecticut.
  • Deepest Point: 12,743 feet or 3,884 meters in Davidson Seamount Management Zone.
  • Volume: 4,480 cubic miles or 7,469,681,093 olympic-sized swimming pools.
  • Average Ocean Surface Temperature: 55F (13C)
  • Marine Mammals: 36 species
  • Seabirds and Shorebirds: more than 180 species
  • Fishes: at least 525 species
  • Turtles: 4 species
  • Invertebrates: 31 phyla
  • Marine algae: 450-plus species
  • Historical Sites: 1,276 reported shipwrecks and 718 prehistoric sites
  • Administered by: U.S. Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Marine Sanctuaries (NMS)