Deepwater Sidescan Sonar and Camera Surveys for Derelict Fishing Nets and Rockfish Habitat by NW Straits Foundation | Jan 24, 2011 Version Download 1032 File Size 3.24 MB File Count 1 Create Date January 24, 2011 Last Updated October 7, 2019 Download Description Abstract This study tested the feasibility of employing side scan sonar surveys to locate derelict nets in deepwater (105 – 350 ft) rockfish habitat, verify the findings with camera surveys, and assess potential threats to the rockfish populations.