Sidescan-Sonar Imagery of the Shoreface and Inner Continental Shelf, Wrightsville Beach, North Carolina

Figure 10.

A: The rock outcrops (marine hardbottoms) in the study area support a variety of or ganisms, including corals, boring clams, sponges, and gorgonians. The organisms contribute not only to the production of biogenic sediments, but also to the acoustic reflectivity of the rock outcrops. (From Thieler and others 1995).