Geoscience Australia

Note: Follow-up with Leo

Australian Waterbodies https://www.ga.gov.au/dea/products/dea-waterbodies and data download https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/132814
Wetland Insights Tool Dunn et al 2019 Beta System is available for QLD within WetlandInfo https://wetlandinfo.des.qld.gov.au/wetlands/facts-maps/wetland-background/insight.html and Metadata Also Dunn et al 2023 (and local download)
Water Observations from Space https://www.ga.gov.au/scientific-topics/community-safety/flood/wofs
National Mangrove Canopy Cover https://cmi.ga.gov.au/data-products/dea/191/dea-mangrove-canopy-cover-landsat
Coastlines https://www.ga.gov.au/dea/products/dea-coastlines
Coasts and esturaties http://www.ga.gov.au/scientific-topics/marine/coasts-estuaries
Intertidal Extents https://www.ga.gov.au/dea/products/iem
National Intertidal Digital Elevation Model https://www.ga.gov.au/dea/products/nidem