Dolphins at daybreak / by Mary Pope Osborne ; illustrated by Sal Murdocca - New York; Scholastic, c1997 - 67 p., illus.

Added to collection 2005 school year from regular budget.

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.

ISBN: 0590706357 (paper) :

Subjects--Topical Terms:
Marine animals--Fiction
Tree houses--Fiction
Riddles--Fiction
Magic--Fiction
Submarines (Ships)--Fiction