Figure 2. Sidescan-sonar image of National Oceanic and Atmospheric Administration survey H11322 in western Rhode Island Sound. Areas of high backscatter (lighter tones associated with generally coarser grained sediment) are observed on the bathymetric highs in much of the eastern, northwestern, and southwestern parts of the study area. Areas of low backscatter (darker tones associated with generally finer grained sediment) are observed in the troughs in the western and southern parts of the study area. Also shown are sediment sample locations (red, yellow, and blue circles) and locations of figures 10, 11, and 12 (blue rectangles). Area of image is shown in figure 1.