Don’t forget to bring a snorkel! Tread through the shallow waters of this dangerous sea cave. Fill it with monsters that you’re PC group will regret facing on their home turf.
Note: These maps are my own work and have in part been created by reproducing found textures online. They’re FREE to use.
The Dungeon Geek 
Thanks for this map! This is exactly what I have been looking for to use with the Pirates of the Spanish Main adventure I intend to run this weekend.
So this is definitely not the Shellcracker Caverns from book 1 of Ruins of Azlant.
Got any more battlemaps from definitely not this book? Because the ones in the book are horribly artaefacted