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All Marine National Facility (MNF) Voyages
This map shows approximate extents of TOPAS Sub-bottom Profiler data collected from Marine National Facility voyages since 2003.
TOPAS data is in purple.

Acknowledgements: - Bright Earth e-Atlas Basemap v1.0 (AIMS, GBRMPA, JCU, DSITIA, GA, UCSD, NASA, OSM, ESRI) CC BY