Emily Windsnap is a fictional character created by author Liz Kessler. She is a half-mermaid, half-human girl who discovers her mermaid heritage when she learns to swim. The series follows her adventures in both the human world and the underwater realm of Merfolk. The Emily Windsnap books explore themes of friendship, identity, and self-discovery. Throughout her journey, Emily encounters various magical creatures and faces challenges that test her courage and determination. The series is popular among children and young readers, combining elements of fantasy and adventure.