Coral reefs are nurseries of the ocean.
Healthy reefs are vital for human health.
Divers can be the difference between a healthy reef and a tragedy. Teaming with biodiversity Coral reefs are a high-density location of biodiversity. This means that the variety of species living on a coral reef is greater than almost anywhere else in the world . Coral reef ecosystems are like bustling cities, with buildings made of coral and thousands of marine inhabitants coming and going, interacting with one another, carrying out their business. In this sense, coral reefs are cities under the sea .