Map of Sunda and Sahul (marked by 125m depth contour) and the Wallace Line,  the Weber Line and the Lydekker Line.
Own work, based on File:Map of Sunda and Sahul.png and using

Coastline from Natural Earth 1:50m Physical Vectors
125m depth contour derived from 2-Minute Gridded Global Relief Data (ETOPO2) v2, NOAA National Centers for Environmental Information, using gdal_contour (from GDAL).
Kanguole