In August 2017, NOAA’s National Centers for Coastal Ocean Science led the 18-day Southeast Deep Coral Initiative (SEDCI): Exploring Deep-Sea Coral Ecosystems off the Southeast U.S. expedition aboard NOAA Ship Nancy Foster. The goals of the expedition included mapping, surveying, and sampling deep-sea coral ecosystems in the eastern Gulf of Mexico and the South Atlantic Bight. Supported by NOAA's Deep Sea Coral Research and Technology Program, expedition research focused on management priority areas identified by the Gulf of Mexico Fishery Management Council and the South Atlantic Fishery Management Council. This footage was collected during Leg 1 of the expedition.