This layer provides the boundaries of significant marine environmental assets which have been identified on the basis of their environmental value (at statewide, bioregional or local significance scale) for marine biodiversity and/or marine ecological processes. Victoria's marine protected areas, including the Marine National Parks and Marine Sanctuaries, are not included in this leayer unless they fall within the boundaries of larger identified asset areas. Separate expert workshops were held to identify these marine environmental assets in each of the following marine regions: Port Phillip Bay, Western Port, Western Victoria and Gippsland. The relative environmental significance of each asset identified was also rated by experts using the following categories: statewide, bioregional or local. Within each category, assets whose value relates primarily to use by birds that are not exclusively marine were rated separately to those whose value relates to exclusively marine species or ecological processes. These significance ratings were assessed separately for each region but the comparability of asset ratings across regions was then reviewed. This supersedes the earlier ASSET_MARINE layer. Blue Whale feeding/ Bonney upweling and Blue Whale Distribution asset areas were also identified through the above process, but have not been included in the layer because they encompass the majority of Victorian waters.

Aerial imagery to identify seagrass, reef and sediment habitat distributions for various marine habitat mapping projects across Victoria between 1997 to 2011 which have been subsumed into the Statewide Marine Habitat Map 2021.

20m resolution bathymetry and 5m contour intervals derived from 20m resolution bathymetry for nearshore Victorian Coast, LiDAR-derived bathymetry plus small area of multibeam-derived bathymetry on Westernport Bay. This dataset covers the Victorian coast, generally extending to the 20m depth contour. This dataset is based on information acquired between November 2008 and April 2009 to support the Victorian Governments Future Coasts Project.

This layer defines the approximate spatial extent, species distribution and density of seagrass and macroalgae in Western Port mapped from aerial photography in 1994 by the EPA.

Victorian State-wide dataset containing features of interest including boating clubs, camping grounds, caravan parks, historic sites, lifesaving clubs and lookouts as identified by the Victorian Regional Coastal Boards and reviewed as part of the Future Coasts SECAP project.

This layer contains line features for depth contours (bathymetry) in Western Port.

This layer contains line features for depth contours (bathymetry) in Port Phillip Bay.

Victorian state-wide dataset containing information on natural features at each ocean beach relating to the surf zone and hydrology, beach system or type, dominant shoreline geology and beach presence. The dataset includes surf zone data on rip currents, swash gradient, tidal range (neap and spring), modal wave height, dominant swell direction and wave frequency. This dataset has been adapted from the Australian Beach Safety and Management Program (ABSAMP) 1999, joined with the VicCoastline 2008 dataset and the geology classified using the smartline coastal data segmentation dataset as produced in the Australian Coastal Geomorphic and Stability Mapping Project.

This layer contains polygon features which represent depth zones in Bass Strait.

SEAGRASS_WESTERN_PORT_1999 is a polygon layer defining the spatial extent, species distribution and density of seagrass and macroalgae in Western Port mapped from aerial photography in 1999.