All Esmerine, a mermaid, wants to do is to become a Siren and work with her sister, Dosinia. When Dosinia is believed trapped on the land by a human, Esmerine decides to rescue her, but changing her tail into legs means that every step is painful. In the capital city Esmerine meets a friend who she has not seen for years Alander who belongs to a winged race of people called Fandarsee, and together they search for Dosinia. As they get closer to Dosinia there rekindle their friendship but is it able to develop into more with them being from different worlds.
Between the Sea and Sky is an enjoyable, sweet fantasy novel with a fairytale feel to it. It is a bit slow paced and while it is predictable it is a nice romantic book.
Esmerine is a sweet and naïve girl but she never gives up and a likeable character. Alan is distant and cold to begin with but he does get better but I still struggled to connect with his character.
Between the Sea and Sky is a cute book and I would recommend it to people who enjoy light fantasy novels and the other book by Jaclyn Dolamore.