All the Stars and Teeth by Adalyn Grace

This has the vibes of Three Dark Crowns, A House of Salt and Sorrows, and Bone Crier's Moon.
"I'm not looking to start a war" Alexa play Miley Cyrus's Wrecking Ball. 
Pirates, y'all. I love pirates. And Mermaids. 
Bastian is cool.
The magic system.
And now I'm stressed about the next book....Because....that happened. 
400 Pages