Las perlas de Neptuno (La biblioteca rosa. Mermaid Magic, 1)

Underwater magic, unbreakable friendship, and a kingdom in mortal danger! Merlinda has it all: she's the princess of Sirentropia, she wields water magic, and she has the best friends in the ocean. But when she discovers her father is sacrificing his own life to save the kingdom, she can't stand idly by. Neptune's Pearls are fading, and there's only one solution: cross the forbidden portal into the dangerous human world. Alongside Nerissa and her electromagic, and Sasha with her cloaking powers, Merlinda embarks on an impossible mission. Sea monsters, lost maps, and the fearsome pirate Redbeard await her on the other side. Can Merlinda master her newfound powers before it's too late? What secrets did her missing mother hold? And when humans and mermaids join forces, will they be strong enough to face the darkness that threatens both worlds?