"Peek under waves and behind coral to discover hungry sharks, shy sea dragons and lots more. And whatever might you find inside a sunken ship?"--Back cover.

Trim looks for a way to help his crewmates without much success, but when he discovers a big problem on the ship, it is all hands on deck.

"Razi, a local fisherboy, is watching turtle eggs hatch when he sees a boat bobbing into view. With a chill, he notices a small, still hand hanging over the side. Inside is Zheng, who's escaped a shipwreck and is full of tales of sea monsters and missing treasure. But the villains who are after Zheng are soon after Razi and his sister, Shifa, too! And so begins an exhilarating escapade in the shadow of the biggest sea monster of them all"--