The California Cooperative Oceanic Fisheries Investigations (CalCOFI) is a collaborative initiative bringing together the California Department of Fish & Wildlife, NOAA Fisheries Service, and the Scripps Institution of Oceanography. Established in 1949, CalCOFI focuses on the systematic study of oceanic conditions and marine life in the California Current region. Their primary offerings include extensive data collection, research reports, and publications related to ichthyoplankton ecology, hydrographic data, and environmental monitoring.

CalCOFI operates a comprehensive database for Continuous Temperature and Depth (CTD) readings, which spans several decades, providing critical information for researchers and environmentalists. They conduct regular research cruises, engaging in various sampling techniques to monitor ocean health and fish populations. Through their dedication to scientific research and commitment to data sharing, CalCOFI plays an essential role in marine conservation and fisheries management. Their resources are invaluable for understanding the ecological dynamics of the California marine environment, supporting both academic research and policy-making.