
By Mary Pope Osborne, Sal Murdocca (Illustrator)
Book #9 in the Magic Tree House series
Two siblings try to solve a riddle that takes them on an underwater adventure.
Jack and Annie are whisked away by the Magic Tree House to the vast ocean, where they discover a mini-submarine on a coral reef. But danger lurks as a giant octopus and a hungry shark close in. With their fate uncertain, will dolphins come to their rescue, or are they destined to become dinner? Dive into this thrilling adventure and find out if Jack and Annie can outsmart the ocean's predators and make it back home safely.
It’s sink or swim for Jack and Annie when the Magic Tree House whisks them off to the middle of the ocean. Luckily, they find a mini-submarine on a coral reef. Unluckily, they are about to meet a giant octopus and one very hungry shark. Will the dolphins save the day? Or are Jack and Annie doomed to be dinner?
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