Multibeam sonar map of a deep-sea coral area off Cape Lookout, North Carolina. The black dot near the center marked "deployment" is the surface position where a benthic lander was dropped. Three dots marked "Tri 1-3" are surface locations used to take range data to the lander. The dot marked "X" is the bottom position for the lander calculated from the range triangulations. Image courtesy of Mike Rhode and Steve W. Ross (UNCW).