Emily Windsnap and the Pirate Prince - Liz Kessler

Feisty girls take to the helm of a pirate ship in this new Emily Windsnap adventure! Ordinary girl on land, magical mermaid in water… Bubbling with magic, fun, friendship and oceans of adventure. A must-read for girls aged 8+.
When Emily Windsnap’s boyfriend Aaron is captured by pirates there’s only one option – join a rival pirate crew and persuade them to help rescue him. The Pirate Prince agrees, as long as Emily assists in finding the Trident’s Treasure first.
But as if boarding a pirate ship weren’t dangerous enough, Emily soon discovers that pirates hate mermaids. If her true identity is revealed, her life – and Aaron’s – will be at risk.
How will Emily keep her secret when the only way to win the treasure is by turning into a mermaid?