Sirene - Le Winx nel Mondo Sottomarino di Andros

Sirene - Le Winx nel Mondo Sottomarino di Andros (translation: Mermaids - The Winx in the Undersea World of Andros) is a novel published in 2007.

Synopsis
"Bloom is alerted about an obscure omen by two distressed mermaids... a horrible threat hidden in the depths of Andros, threatens to compromise the balance of the underwater world. Between spectacular metamorphoses and breathtaking duels, the Winx fight against the dreaded Kraken, flanking the Mermaids, magic after magic, until the final victory."

Plot
In Alfea, Griselda passes to check if everything was alright as Flora explains that Bloom was having a nightmare. As Bloom wakes up, she explains to the Winx she had a premonition with two mermaids (Kalia and Nesia) in distress. Kiko and the girls hug her and tries to calm Bloom.

In the undersea world of Andros, at the palace, the Winx are greeted by the princess Tressa and the queen Ligea that gifts them with a mermaid form.

After much talk, it is explained that Tala, the messenger of the kingdom, was the one that called them as the undersea world's ecosystem is in danger, being polluted by a poisonous liquid marine flora sick, also hitting Kalia, the marine flora's guardian. The one causing this is the Kraken, and to solve this problem Flora suggests making him eat a magical plant, the Amina Fermentina that transforms everything it meets into fertilizer, transforming the Kraken into fertilizer and saving the sea.

Characters

 * Winx
 * Bloom
 * Stella
 * Flora
 * Musa
 * Tecna
 * Aisha
 * Mermaids
 * Ligea
 * Tressa
 * Nesia
 * Tala
 * Kalia
 * Tala
 * Others
 * Lockette
 * Kiko
 * Kraken
 * unnamed seahorse

Mistakes

 * Celina is called Nesia.

Trivia

 * At the hardcover, the title "Sirene" is made of silver foil paper with details of colorful stars
 * The pages' paper have a gloss layer and are a little bit tick.
 * The book contain two fixed posters, each the size 4 pages, folded to fit in.
 * In 2014, parts of both this book and Perle were combined, and made into an interactive copy sold in CD form along with the Magic Ocean dolls. It was titled "Magic Ocean".