The Matlahuyl State Marine Reserve was established in 1971 and has since been expanded to a total of 533 acres (2.2 km2). No fishing or scavenging is permitted within the reserve. The more recent designations took effect in 2012.
San Diego Scripps Coastal State Marine Conservation Area encompasses the Scripps Pier at Scripps Institution of Oceanography and was established back in 1929 as an academic research area. Recreation and fishing for pelagic bait fish with hook and line are permitted in the MCA.
A 30-foot (9.1 m) by 75-foot (23 m) lithocrete map of the underwater park was completed in September 2008 at La Jolla Shores beach. It was located near the boardwalk between the restrooms and the children's play area at the south end of Kellogg Park. (It fell apart due to construction defects and an entirely new version is being completed by the Friends of La Jolla Shores and the Munk Foundation and will be installed in the near future. (contact Mary Coakley Munk for further details.)