This beautiful and interesting non-fiction book is about the adventures of two men (the Author and Photographer) who spent seven days in an small underwater laboratory to study the sea creatures at Conch Reef.  The small capsule these men worked from was described, how they trained before beginning, what they experienced while working underwater, and what they learned.  The text is clearly written and the photographs are engaging and related to the text.  Students will enjoy reading about this adventure and will learn more about what it is like to work as an undersea scientist, diver, or photographer.