Juvenile Rockfish Survey (JRS) 2004- collected data from May 05, 2004 to June 10, 2004 sampling 1,258 nmi of ocean habitat. JRS samples hydrographic conditions, zooplankton (including krill) and young of the year (YOY) rockfish (Sebastes spp.) and other micronekton using CTD casts, Tucker trawls, and mid-water trawls (MWT), respectively, at a series of stations along the continental shelf from southern to northern California (raw data courtesy of SWFSC: Sakuma et al. 2006, Field et al. 2010, Santora et al. 2012).