This record is derived from DEC Marine Policy Branch Endnote library and spatially referenced SIER Database.

This dataset is a composition of various datasets to form a map at the 1:100000 scale of the seagrass and underwater habitats from Shark Bay to NSW border going south and including Tasmania. Data extends up to 50Km offshore. The dataset was compiled largely by Dr Hugh Kirkman and subsequently updated by Dr. Ian Hahmdorf, (Bureau of Rural Sciences) and became part of CAMRIS as the CAMRIS Seagrass Dataset. Additional details (including a link to download the data as shapefile) are accessible via the www.environment.gov.au website (see links section).

The map and underlying digital dataset provide national and regional-scale context for a wider variety of applications, including offshore industries, area-based environmental management, scientific research and public education. Australia’s Seabed Map is based on the revised AusBathyTopo 250m (Australia) 2023 grid (Beaman, 2023), the most comprehensive, continental-scale compilation of bathymetry data in the Australian region. The map extends across a vast area from 92°E to 172° E and 8°S to 60° S. This includes areas adjacent to the Australian continent and Tasmania, and surrounding Macquarie Island and the Australian Territories of Norfolk Island, Christmas Island, and Cocos (Keeling) Islands. Australia's marine jurisdiction offshore from the territory of Heard and McDonald Islands and the Australian Antarctic Territory are not included. The new map provides a complete three-dimensional picture of the seafloor and is a significant improvement since it was last revised in 2009. In particular, the map incorporates new innovations such as the use of earth observation data (satellite based) produced by Digital Earth Australia to improve coastline definition and present a seamless transition between land and sea. The data is compiled from 1582 individual surveys using multibeam echosounders, single-beam echosounders, LiDAR, or 3D seismic first returns, as well as higher-resolution regional compilations, and other source data including Electronic Navigation Charts and satellite derived bathymetry. The new map represents decades of data collection, analysis, investment and collaboration from Australia’s seabed mapping community. The 250 m resolution is only supported where direct bathymetric observations are sufficiently dense (e.g. where swath bathymetry data or digitised chart data exist). In many regions, this 250 m grid size is far in excess of the optimal grid size for some of the input data used. The AusBathyTopo250m grid and higher-resolution regional datasets are available on the AusSeabed Marine Data Portal as the AusBathyTopo Series. This map is not suitable for use as an aid to navigation, or to replace any products produced by the Australian Hydrographic Office. Medium: Digital PDF download.

The MARine Sediment (MARS) database contains detailed information on seabed sediment characteristics for samples collected from Australia's marine jurisdiction, including the Australian Antarctic Territory. It includes survey and sample information such as locations, water depths and sample descriptions. Data are also provided from quantitative analyses of the sediments, such as grain size, mud, sand, gravel and carbonate concentrations, mineralogy, age determinations, geochemical properties, and physical attributes for down-core samples including bulk density, p-wave velocity, porosity and magnetic susceptibility. Images and graphics are presented, where available. MARS currently holds >40,000 sample and sub-sample records, and approximately 200,000 records describing the characteristics of these samples. New data are being added as they become available.

A database containing sounding data around Macquarie Island. Track line data for each data source is included.

Tidal data collected from 7 autonomous stations, and 3 for use at short-term sites. Reference data from minor stations is available. Programme supports: determination of the marine tidal datum / tide predictions for safe navigation and recreation / coastal engineering design, environmental studies / development and management of marine facilities / storm surge information / Dynamic Under Keel Clearance for shipping / real time data for State Emergency Services and BOM for use during extreme events.