QUEST joined us in Back Sound, a shallow body of water behind Shackleford Banks, North Carolina, to learn about our work with oyster reefs. We were laser scanning a natural reef that formed on a sandflat in an area that is thought to be an old flood-tidal delta. We anticipate that the part of the reef that is growing vertically most rapidly is exposed to air 40% of the time and exists in a ring around the center of the reef. The full moon and southwest wind made for an extreme low tide and most of the area was exposed. Two years from now we will scan the reef again to see if our hypothesis was supported.