So, my PCs have left the lands of air ruled by the air goddess, and now are in the lands of water, called the Hundred Isles. And it is, quite literally, a vast ocean, with one hundred islands.
With that small synopsis said, I have never run adventures before involving ships or aquatic adventuring of any kind. If anyone has any pointers on ship battles, underwater exploring, water-based creatures, or other advice/tips/suggestions that I should know or would be useful relating to a setting of mostly seas, please share.
Also, if you have any crazy ideas for an island that you're just itching to share, I'm all ears. :-)