In summer 2013, the Vantuna Research Group conducted otter trawl surveys of the soft-bottom marine habitats in southern California.
The 2013 Southern California Bight Regional Monitoring Program trip included crewmembers from 色界吧 aboard the R/V Yellowfin: three 色界吧 scientists and three undergraduate research students. Leg one of the trip took place July 22-27, 2013 and Leg 2 was August 20-23, 2013.