Code of Rainbow: Legends of Azure and the Masked Planet (Book 3)

Due to a shocking discovery, Soarame now has to undertake a new dangerous journey with his friends. He must cross the largest, most deadly ocean in the world. Battling more powerful, evil wizards, he was forced to escape underwater, and stay in the bottom of the ocean for weeks. But how could a teenage boy survive underwater, especially that there were lethal creatures down there? And what further perils are waiting for him, if he really survives?