Title: Shark attack
Description: You're trapped on the bottom of the sea in a tiny two-person submarine. Your air supply is running out, but before you can surface, you must find your way out of a maze of undersea caverns! You could become the greatest undersea explorer ever-- or food for sharks!
Subjects: Plot-your-own stories, Literary recreations, Optical illusions, Underwater exploration, Stereograms, Juvenile literature, Mystery and detective stories