Figure 1. Map showing the location of National Oceanic and Atmospheric Administration (NOAA) survey H12023 (red-shaded polygon) offshore of Rhode Island in Block Island Sound. Also shown are other NOAA surveys (gray-shaded polygons) that have been interpreted in this series in Rhode Island and Block Island sounds including H11320 (McMullen and others, 2007), H11321 (McMullen and others, 2008), H11322 (McMullen and others, 2009), H11922 (Poppe and others, 2011), H11995 (McMullen and others, 2012), H11996 (McMullen and others, 2011), and Block Island Sound survey, a combination of surveys H12009, H12010, H12011, H12015, H12033, H12137, and H12139 (Poppe and others, 2012).