Coral eats in a special way. It has tiny arms called tentacles around its mouth. These tentacles catch small animals floating in the water. When food touches a tentacle, the coral quickly pulls it into its mouth. Some coral also gets food from tiny algae living inside it. These algae make food using sunlight, just like plants do. At night, many types of coral open up to catch more food. During the day, they often close up to stay safe.
1. What does coral use to catch food?
2. When does coral often open up to catch more food?
3. How does coral get food from algae?
4. Why does coral often close up during the day?