The Mermaid by Christina Henry
From the author of Lost Boy comes a beautiful historical fairy tale about a mermaid who leaves the sea, only to become the star attraction of history's greatest showman.
Once there was a mermaid called Amelia who could never be content in the sea, a mermaid who longed to know all the world and all its wonders, and so she came to live on land.
Once there was a man called P. T. Barnum, a man who longed to make his fortune by selling the wondrous and miraculous, and there is nothing more miraculous than a real mermaid.
Amelia agrees to play the mermaid for Barnum and walk among men in their world, believing she can leave anytime she likes. But Barnum has never given up a money-making scheme in his life, and he's determined to hold on to his mermaid.