Welcome to the Coral Reef

What is a coral reef actually made of? Which microscopic creatures take shelter in the coral and become its food? What coral reef resident has stinging tentacles and who is it hunting? And which huge creature visits the reef to have its dead skin and parasites nibbled away by a fishy clean-up crew? Step by step, readers will explore a coral reef and discover how all the living things form an ecosystem and rely on each other for survival.