Sirene - Le Winx nel Mondo Sottomarino di Andros

Sirens is a book.

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.

Mistakes

 * Celina is called Nesia.