Osborne, Mary Pope <br/><br/>
Dark day in the deep sea / 
by Mary Pope Osborne ; illustrated by Sal Murdocca. 
 - New York :  Scholastic,  2008. 
 - 106 p.:   ill  19 cm. 
 - Magic treehouse series ; #39. .
<br/><br/> Lex: 520 
<br/><br/>When eight-year-old Jack and his seven-year-old sister, Annie, join a group of nineteenth-century explorers aboard the H.M.S. Challenger, they learn about the ocean, solve the mystery of its fabled sea monster, and gain compassion for their fellow creatures. 
<br/><br/><br/>in English 
<br/><br/><label>ISBN: </label>13: 978-0-545-20214-5 
<br/><br/><label>Subjects--Corporate Names: </label><br/>; Challenger (Ship : 1872-1876)--Juvenile fiction.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Oceanography--Juvenile fiction.<br/>Compassion--Juvenile fiction.<br/>Time travel--Juvenile fiction.<br/>Magic--Juvenile fiction.<br/>Tree houses--Juvenile fiction.<br/>Brothers and sisters--Juvenile fiction.
<br/><br/><label>LC Class. No.: </label>Os12d 2009 bk.39