Title: Diving into darkness
Subtitle: a submersible explores the sea
First published: 1989
Description: Discusses how scientists use submersibles to explore the depths of the ocean, surveys the development, operation, and equipment of the Johnson-Sea-Link sub, and describes a typical dive to the bottom of the sea.
Subjects: Underwater exploration, Submarines (Ships), Juvenile literature, Oceanographic submersibles
LC classification: GC67 .J64 1989