Description: This layer is an outline of the Australian shoreline. The information was derived from the Geodata 3 Topographic 250K 2007 data, with a nominal scale of 1:250,000. 250K Specifications Description - Shoreline - A line depicting the boundary of a mainland, island or sea. (Source - http://www.ga.gov.au/mapspecs/topographic/v6/appendixA_files/Framework.html ) Activated at all scales.