Original Idea
When I started reading this sample I thought it was YA and that Yetu was a teenager. I was quite surprised to learn that she was in her thirties. If the position of historian is so important to these people, it was irresponsible not to thoroughly vet her.
Presumably later it's explained how they became fish people? That could be interesting.
Presumably later it's explained how they became fish people? That could be interesting.