Dark Tide Rising
The fish creatures that the party fought in Belle Mare are known to the merfolk as Deep Ones. These creatures are not native to any part of the Heartsea. They appeared along with the first cultists around five years ago. Deep Ones tend to keep their presence hidden in civilized areas, but wherever the cult is active, they can be found. Most Deep Ones serve as elite warriors, but about one in ten are priests. Deep Ones almost never occupy a command role.