I remember having this debate a long time ago, but I just thought of this again while working on my fairytale books blogpost.

Are mermaids within the fairytale genre or is it a separate subgenre of its own? After all mermaids are featured in fairytales but the only major princess is Ariel from the Little Mermaid. Which can be excluded for those who want to focus on landlocked kingdoms.

However, much like fairy books they can be seperated on their own as seen below without any mention of fairytales. So within genre or subgenre?

Second question are unicorn books under the umbrella of fairytales or also a subgenre of its own?

Comment below with what you think!