This layer contains polygon features which represent subtidal relief. Isobaths are linear features which are lines of equal depth that form the boundaries of the polygons.

This is a polygon layer defining the spatial extent, species distribution and density of seagrass and macroalgae within Port Phillip Bay mapped from aerial photography in 2000. The mapping was ground-truthed in the field.

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.

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

This layer contains line features which represent depth contours (bathymetry) in Mallacoota Inlet.

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

This layer contains line features which represent depth contours (bathymetry) in the Gippsland Lakes.

This layer contains line features which represent depth contours (bathymetry) in Corner Inlet.

This layer presents the spatial extent, species distribution and density of seagrass/submerged aquatic vegetation at Gippsland Lakes mapped from 1997 aerial photography and field observations.

This layer contains polygons defining the spatial extent, species distribution and density of seagrass meadows within Sydenham Inlet mapped from 1999 aerial photography and ground-truthing.