Sea Spirits:
The ocean off of Natacoast is sentient, made up of countless spirits. These spirits are in an endless cycle of reincarnation with the residents of Natacoast (as well as Hasket)
It follows the pattern that a sea spirit will incarnate into a newly born human, and when that human dies the spirit returns to the sea, and will eventually incarnate again.
In sea form, they retain memories from every incarnation. Spirits have complex social bonds with eachother, despite lacking corporeal form, or even an actual society.
Spirits are by default genderless, although the lives they live may impact how they ultimately view themselves.
Important Spirits:
The 2 sea spirits with an integral role to the story are Kat and Camilla Nova. They are sibling spirits incarnated into twin bodies.
What makes them different from typical incarnations of other spirits is that they were not born into these bodies, but instead occupied them after the origional girls tragic deaths. This means that as opposed to being mostly human, they mantain the memories and mannerisms a spirit would typically have out in the water.
This is soon revealed to not be unique, as an increasing number of spirits begin to occupy lives already partially lived, throwing off the balance of human and sea spirits.
The cause of this is connected to the same mysterious figure attempting to become a god that is central to the overall plot
