Plot
Their magic tree house takes Jack and Annie deep into the sea, where they meet up with dolphins, sharks, and octopi as they search for the answer to an ancient riddle. Complete with a giant octopus, a hungry shark, and dolphins to the rescue, this Magic Tree House book delivers an underwater adventure kids can dream about.
Book Details
| Author | Mary Pope Osborne |
| Publication Year | 1998 |
| Publisher | Scholastic Books |
| Format | Paperback |
| ISBN | 9780590706353 |
| Number of Pages | 67 |