Sea Urchins Are Brainless! (Animals Without Brains!)

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.