Well the good thing is that land can be raised and water adjusted at a later date. There may be a little more work involved to clean up the underwater land that will get changed a bit but that beats redoin the whole map.
yeah i think a teak is definitely the way to go but at a later date, i mean theres no reason it couldn't be made a feature that we can explore all this underwater stuff with submersibles for transport and hunt pearls or some such