The displacement volumes reported in the bi-annual CalCOFI Data Reports are online in downloadable format and query form: 

• Access relational database - zooplankton displacement volumes linked to hydrographic bottle & CTD cast data - work-in-progress
• Ship-specfic Listing of Zooplankton Tows - links to NMFS online database
• CalCOFI 1950-2007 Zooplankton displacement volumes (csv ascii file)

• NMFS Global Plankton Online Database with ship, study or many options
• SIO Invertebrate Collection
• CalCOFI Data Report Database - preliminary zooplankton version
• 2000s  Data
• 1990s  Data