A Pirates Life

This world is inhabited by pirates, 2 million years ago the world flooded, the pressure crushing landmasses and making islands. You are 17 and your grandpa is a grandfather, some pirates are good. Magic sea monsters exist and so do magic ores for unique weapons and ammo. Your parents died to a kraken around the time of your birth so you stay on an island where your grandpa, Max, keeps his treasure and also uses as a base for his crew