Detective brothers Frank and Joe Hardy are on the case when a sea star goes missing during their school field trip to the Bayport Aquarium.
First Aladdin paperback edition.
86 pages : illustrations ; 20 cm.
Target Audience Note:
Hardy Boys clue book. #12, Sea life secrets
Series:Dixon, Franklin W. Hardy Boys clue book
Dixon, Franklin W. Hardy Boys clue book ; #12.
Hardy Boys clue book
Hardy Boys clue book ; #12
Subjects:Aquarium animals -- Juvenile fiction.
Aquariums -- Juvenile fiction.
Brothers -- Juvenile fiction.
Hardy Boys (Fictitious characters) -- Juvenile fiction.
Penguins -- Juvenile fiction.
School field trips -- Juvenile fiction.
Detective and mystery fiction.
Other Authors:Gutiérrez, Santy, 1971- illustrator.