Coral Reef ecosystem is a diverse, complex system where animals interact together in a physical environment. Every animals has a special place and a special job to keep the ecosystem working and thriving. The Sea World website shares the animals that are found in the coral reefs and their importance to making everything work. Every animal has a job in the coral reef. If that animal were to disappear, the reef could face over population, extra growth, and the possibility of the extinction of other species.