Physical and biological data collected off the Florida coast in the North Atlantic Ocean and the Gulf of Mexico as part of the Harmful Algal Bloom Historical Database from February 5, 1954 to December 30, 1998 (NCEI Accession 0000585)

This database, termed HAB Historical Database (HHD), was designed to efficiently capture core information, yet have the capacity to expand and capture related sampling information if it is available. It performs this task through a series of connected data tables and related forms.

The minimum parameters required in order for a sample record to be entered into the database are a K. brevis count (in cells per liter), the date when the water sample was collected, and a description of where the water sample was taken. Datasheets that contained these minimum requirements were compiled from various investigative cruise projects, and state, county, and private agencies, which had collected samples that contained K. brevis.