My sim family is on a holiday on the SimLau Isles by My Sim Realty. I had been looking for a nice tropical world too and gave this one a try. It has a bit of everything, but it is unpopulated and have some routing issues, and not the best for boats because of the bridges, but it has plenty of water and three (I think) diving spots. I wish it had the Sunlit Tides lighting. There is a fishing spot on the top of a high mountain, but you can't fish in the lake there. =d It's a nice world, though. I'm playing it as its own save for the convenience.