Magic Tree House 9: Diving with Dolphins
Mary Pope Osborne
After a break from their trips in the tree house, Jack and Annie are delighted to find that it’s back! Morgan le Fay needs their help, but they’ll have to become Master Librarians first, and that means solving four riddles. For the first one, Morgan sends them deep into the middle of the ocean. Jack and Annie ride in a mini-sub and meet jellyfish, sea horses and an octopus. But there are some scary sharks in the deep and the friendly dolphins have to come to the rescue. . .
Reviews

I liked when they searched for treasure - I love treasure hunts! I hope to find a pearl under the sea one day.
Count Pug Toothpaste 21.08.2023

It was a bit scary when the submarine started leaking water but it was very lucky that the dolphins were there to swim them to shore.
General Blossom Tyrannosaurus 05.08.2023

Star Reviewer

I didn't really like how they had to solve a riddle and the brother was unsure about it.
Princess Bunny Menace 28.07.2023

This story was really frightening, but also existed. Recommend it.
Fairy Angora Rollercoaster 08.08.2021

Because it was so good I let my best friend read it!!
Princess Majorca Palm-tree 13.12.2020

Annie and Jack are learning how to be a master librarian.It is a good book.
Countess Beryl Volcano 30.07.2020

I wish I had a submarine to go see the dolphins. The riddles were nice and not easy to find the answer. I recommend.
Captain Peanuts Wellington 14.06.2020

Jack and Annie were diving deeply under water in a mini-sub,they have to tackle a giant octopus and escape from the scary shark.The dolphins seem very friendly.I really enjoyed both of these books.
Anonymous 30.07.2016

Quick read
Anonymous 26.07.2016

it is a fun and exciting book with adventures
Anonymous 31.07.2015