Global High Seas Benthic Seascapes for Marine Protected Area Planning

Global ocean floor classified into 11 seascape categories using 6 biophysical variables, resulting in 53,713 polygons. The dataset was produced by Geoscience Australia Data to support the design of high seas marine protected areas. It was last updated on 2026-04-30.

Use Cases

• Identifying candidate sites for marine protected areas based on seascape and geomorphic heterogeneity maps.
• Classifying benthic bioregions using multivariate statistical analysis of biophysical variables.
• Validating seafloor habitat classifications by comparing derived seascapes with existing geomorphology maps.

Strengths

• Classification is based on 6 distinct biophysical variables, including depth and primary production.
• Results in 53,713 separate geospatial polygons for detailed analysis.
• Methodology uses objective, computer-aided mapping to reduce subjectivity in MPA design.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Freshness should be verified as the last update date is in the future (2026-04-30).

Provenance

Source

Geoscience Australia Data

Collection Method

Multivariate statistical classification of 6 biophysical variables using GIS analysis.

Freshness

Last updated 2026-04-30 14:31:20.335873

Geography

Global high seas (ocean areas beyond national jurisdiction)