ERDDAP (the Environmental Research Division's Data Access Program) is a data server that gives you a simple, consistent way to download subsets of scientific datasets in common file formats and make graphs and maps. This particular ERDDAP installation has oceanographic data (for example, data from satellites and buoys).
The data now served through ERDDAP are derived from the entire 1950-present CalCOFI ichthyoplankton (all 450+ species) and hydrographic databases (i.e. both SWFSC and SIO managed databases). These data are accessible either through a GUI on ERDDAP, or from analysis programs (such as R, Matlab or NCL) using a URL and an Opendap-type protocol. The data are available in a variety of output formats for download. 
1950-present CalCOFI ichthyoplankton & hydrographic databases are available in queryable form.
Go to the ERDDAP home page and search CalCOFI datasets.