Gray’s Reef is a unique and pristine location that is worth protecting. One of only 14 National Marine Sanctuaries throughout the US, Gray's Reef is located 16 miles east of Sapelo Island and covering 22 square miles. Gray's Reef hosts over 200 fish species, 480 invertebrates species, and a vast array of incredible sights! Learn more about the Sanctuary through the following initiatives of the Sanctuary program. Each one will open a new browser directing you to the Gray’s Reef National Marine Sanctuary site.