NOAA NMFS Southwest Fisheries Science Center (SWFSC) has partnered with scientists across multiple agencies to survey groundfish assemblages and habitats in deepwater off California using manned submersibles executing video transects. This project examined the resulting nearly 400 hours of footage to identify the types, locations and densities of marine debris in the survey areas, focusing especially on derelict fishing gear, with the goal to better understand debris densities and potential impacts in the survey area. The team reviewed data from 132 dive surveys, identifying over 730 debris objects for analysis. Overall density of debris object density in the central California sites was higher (0.64 items/100m) than at offshore locations off southern California (0.15 items /100m). Overall density seemed to decline relative to distance from port.