9 Coral Reefs Around the World That Support Entire Communities

9 Coral Reefs Around the World That Support Entire Communities

Coral reefs around the world are tiny animal-built cities that power some of the planet's richest ocean ecosystems. Even though coral reefs cover less than 1 percent of the ocean floor, the coral reef ecosystem supports about one-quarter of all marine species and helps sustain local communities, coastal populations and major tourism economies around the world.