Table 1.

Description of fields in the database and map portal.

Field	Description
Date	Numeric Month, Day, Year (e.g., 01/25/2023 for January 25, 2023) when the record was collected
Latitude	Geographical latitude in decimal degrees of the record location
Longitude	Geographical longitude in decimal degrees of the record location
Location-Oceans	Ocean in which the record occurred. Values are Arctic Ocean, Atlantic Ocean, Indian Ocean, Pacific Ocean, Southern Ocean
Location-Regions	Major Seas within an Ocean in which the record occurred. E.g., Arafura Sea; Bali Sea, Bay of Bengal, East China Sea, Gulf of Mexico, Mediterranean Sea, Tasman Sea
Location-SubRegions	Sub-regions of Ocean and Seas in which the record occurred. E.g., Adriatic Sea, Alboran Sea, Florida Keys National Marine Sanctuary, Strait of Gibraltar
Microplastics measurement	Concentration of the record
Unit	Concentration unit of the record: pieces/m3
Concentration class range	Concentration classification of the record
Concentration class text	Text description of the record concentration class range
Sampling Method	Instrument that was used to collect the record
Short Reference	Short form of reference for related publication for the record
Long Reference	Long form of reference for related publication for the record
DOI	Digital Object Identifier associated with related publication of the record
Organization	Institution that collected the record
Key words	Key search words associated with the record
NCEI Accession No.	Data package accession number associated with the record in NCEI archives
NCEI Accession No. Link	Link to the data package associated with the record in NCEI archives

Other details regarding data points may be accessed through the NCEI Accession No. Link.