Deep Sea Diver, Robot, and Monkey board a submarine, the Guppy, to delve into the darkest depths to discover what has taken the light from the sea.
- ISBN10 0375972021
- ISBN13 9780375972027
- Publish Date 25 August 2015
- Publish Status Remaindered
- Imprint Random House Books for Young Readers
- Format Hardcover (Library Binding)
- Pages 32
- Language English