Links in this category of editors choices cover some of these topics:
marine, coasts, estuaries, biology, geology, geophysics, reefs, human impacts, meteorology, oceanography, hydrography, bathymetry

• Land Information New Zealand (LINZ) [nz]
• Australian Surveying and Land Information Group (AUSLIG) [aus]
  • topographic maps, spatial data, geodesy, astronomy, remote sensing, satellite images, geocentric datum (GDA), GPS, DEM, national coordination
• Australian Geological Survey Organisation (AGSO) [aus]
• Environment Australia - Coasts and Oceans [aus]
• Commonwealth Scientific and Industrial Research Organisation (CSIRO) [aus]
• CSIRO Division of Marine Research [aus]
• Australian Antarctic Division [aus, ant]
• International Centre for Antarctic Information and Research (ICAIR) [nz, ant]
• Department of Conservation [nz]
• Greenpeace Australia [aus]
• Greenpeace New Zealand [nz]
• Great Barrier Reef Marine Park Authority (GBRMPA) [qld]
• Australian Hydrographic Office (AHO) [aus]
  • hydrographic surveying and charting, bathymetry, tide tables, navigation products, Sailing Directions, List of Lights, List of Radio Signals
• CRC for Antarctica and the Southern Ocean [ant]
• NSW Environment Protection Authority (EPA) [nsw]
• National Institute of Water and Atmospheric Research (NIWA) [nz]
• Natural Heritage Trust (NHT) [aus]
  • environmental rescue effort, coordinated approach, partnership of individuals and communities and governments, funding for environmental activities
• National Tidal Facility (NTF) [aus]

Region codes [aus, nz, ant, ...] indicate the state or country that each site is relevant to.