Attached is a Polish .mp file for seafloor bathymetry of the islands off Mersing. Lines are of 10 ft separation from satellite data which credit goes to Gebco and Smith and Sandwell. These are predicted depth from satellite altimetry and are not from depth soundings and are meant for use as general reference only and in no circumstances should it be used for navigation or commercial use.
A shapefile of the seafloor bathymetry as shown in the image below is available if you pm me.

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