ocean_number_content_of_biological_taxon_of_mature_individuals m-2 [UPMS] "Content" indicates a quantity per unit area. The "ocean content" of a quantity refers to the vertical integral from the surface to the bottom of the ocean. Mature individuals refer to individuals that have reached sexual maturity. "Biological taxon" is a name or other label identifying an organism or a group of organisms as belonging to a unit of classification in a hierarchical taxonomy. There must be an auxiliary coordinate variable with standard name biological_taxon_name to identify the taxon in human readable format and optionally an auxiliary coordinate variable with standard name biological_taxon_identifier to provide a machine-readable identifier. See Section 6.1.2 of the CF convention (version 1.8 or later) for information about biological taxon auxiliary coordinate variables.