Sure thing, this is a 256x256x64 map where half of it is water with a bottom layer of dirt so you can actually build. If you really want a map that is COMPLETELY water, that's in here too.
It'd be really easy just to make it yourself, but if you want me to make one, how big exactly do you want it in dimensions? If you don't specify anything else I'll just make it so that it's basically a resized normal randomly generated map.
0
0
http://drop.io/waterworldmap
0