My colleague Carl Nielsen is dangerous when he's on vacation. He just sent over two more adapted fills from the U.S., left, a burnt forest fill, and right, a muddy water fill. Both are adaptations of fills in the Vintyri (TM) Cartographic Collection, however, these adaptations are not in the collection yet, nor are they available from our website. They're no big deal, but here they are, if you can use them. Carl says the muddy water fill works best if you want something visible under water. Put whatever you want under water in place, cover it with the muddy water fill and add transparency to the fill. I haven't tried it myself yet, but it sounds like it should work.