Yu hai tun gong wu
Subtitle: Dolphins at daybreak
By: Mali Bo Aosiben ; zhu yi Lan Baochun, Lan Chun
Contributors: Lan, Baochun; Lan, Jun
Edition: Di 1 ban
Series: Shen qi shu wu. Dian cang ban = -- Magic tree house -- 09; Shen qi shu wu -- 09.
Publisher: Hubei shao nian er tong chu ban she
Published: 2010
Place of publication: Wuhan
Language: chi
Number of pages: 153
ISBN-13: 9787535349927
Subjects: Jack (Fictitious character : Osborne); Marine animals; Magic; Riddles; Annie (Fictitious character : Osborne); Juvenile fiction; Fiction; Submarines (Ships); Tree houses; Time travel
Description: 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. Morgan le Fay will make Jack and Annie masters of the tree house if only they can solve four riddles -- which will take four books, of course! Dolphins at Daybreak begins the third set of four books in this magical (and increasingly popular) series!  Jack and Annie are off in the Magic Tree House again, this time to a whole new world under the ocean.  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.
Notes: Translation of: Dolphins at daybreak.

Text in simplified Chinese and English.