From Catherine Booker, Moriah Harbour Cay National Park:
Moriah Harbour Cay National Park (MHCNP) is managed by the Bahamas National Trust (BNT). It is a part of the greater Elizabeth Harbour. Please respect rules and regulations when visiting the park. MHCNP is a NO ANCHORING area to protect sensitive ecosystems such as coral reefs and seagrass beds from anchor damage. A person must NOT drop an anchor for a vessel, aircraft, or any other facility in a no-anchoring area. For safety, please maintain idle speed/no wake within 200 feet of shorelines, around reef areas, shallow flats, and in mangrove creeks unless otherwise marked. Please use mooring buoys provided at popular snorkeling locations. Fees for overnight moorings in designated mooring fields and park boundaries can be found by visiting the BNT website: www.bnt.bs/explore/exuma/moriah-harbour-cay-national-park/ and also on Charts EX 7, EX 30 and EX 30A in the Explorer Chartbook Exumas.
Here's a look at the area covered by the Park.
Correction: The original map incorrectly labeled the National Park name. It is Moriah Harbour Cay National Park.