Coral Reefs: Cities of the Ocean #[nn]

In "Chapter One: What Is Coral?", Maris Wicks explores the surprising truth behind coral—revealing them not as plants, but as tiny animals belonging to the cnidarian group. Through clear, engaging storytelling and vivid illustrations, she introduces how these creatures build vast reef cities over thousands of years, relying on a vital partnership with symbiotic algae.

In "Chapter Two: How and Where Coral Reefs Are Formed," Maris Wicks guides readers through the slow, intricate process of reef development, from the first tiny polyps to vast underwater cities. Exploring the three main types—fringing, barrier, and atoll reefs—this chapter reveals how these living structures shape ocean ecosystems over tens of thousands to millions of years.

In "Chapter Three: The Coral Reef Ecosystem Explored!", Maris Wicks guides readers through the intricate web of life in coral reefs, using a clear system to classify the diverse creatures that call these underwater cities home. From delicate corals and other cnidarians to bustling fish, sea turtles, dolphins, and even humans, the chapter reveals how each organism plays a vital role in this vibrant, interconnected world.

In "Chapter Four: How Are Coral Reefs Connected to the Rest of the Planet?", Maris Wicks explores the vital, unseen links between coral reefs and the global systems that sustain life on Earth. From the water cycle to the oxygen produced by tiny marine plants, this chapter reveals how reefs are not isolated ecosystems but deeply woven into the planet’s health—and our own.

In "Chapter Five: Little Reefs, Big Planet: Challenges, Changes, and Taking Charge," Maris Wicks explores how human-driven climate change is disrupting ocean ecosystems at an alarming pace. From coral bleaching triggered by warming waters to the damaging effects of ocean acidification and pollution, the chapter lays bare the urgent threats facing marine life today.