"Simple text and full-color photography introduce beginning readers to sea urchins. Developed by literacy experts for students in kindergarten through third grade"--

"Sea urchins don't have brains, and yet sea urchin bodies are well-developed to detect the environment. This book explores body parts sea urchins use instead, including an interior water pump that allows the creatures to move about and hold on to food. Fun and bizarre facts are spread throughout the narrative, like how a sea urchin turns itself inside out upon growing into its adult stage. Young readers will be delighted by these ocean creatures."--...

A simple introduction to the physical characteristics, life cycle, and habitat of sea urchins and related species.

Describes the life of sea urchins, including their physical characteristics, history, habitats, diet, reproduction, threats from predators, and their impact on the ocean food webs and environment.

Introduces the reader to a mysterious group of animals, from the more familiar starfish to the unusual sea cucumber and sea potato.