Coral reefs are like busy cities under the sea. Many animals live there. Colorful fish swim around the coral. They hide in small holes to stay safe. Crabs and shrimp crawl on the coral. Sea turtles visit to eat and rest. Octopuses change their color to blend in. Starfish use their arms to move across the reef. Even tiny animals like worms and snails make their homes here. All these animals work together to keep the reef healthy.
1. What are coral reefs compared to in the passage?
2. Where do fish hide in the coral reef?
3. Which animal changes its color to blend in?
4. What do all the animals do together?