this website is great for gray's national sanctuary!
http://graysreef.noaa.gov/
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Gray's Reef National Marine Sanctuary was created in 1981-01.
Grays Reef Light Station was created in 1936.
The great Barrier Reef
The Aquarius Reef Base is an underwater laboratory deployed on the ocean floor next to a deep coral reef named Conch Reef off Key Largo in the Florida Keys National Marine Sanctuary. It is dedicated to ocean exploration, and the study of marine ecosystems.
Grays Lake National Wildlife Refuge was created in 1965.
Calipuy National Sanctuary was created in 1981.
Ampay National Sanctuary was created in 1987.
Megantoni National Sanctuary was created on 2004-08-18.
The area of Megantoni National Sanctuary is 2,158.69 square kilometers.
Monitor National Marine Sanctuary was created in 1975.
The area of Calipuy National Sanctuary is 45 square kilometers.
The area of Ampay National Sanctuary is 36.35 square kilometers.