Did You Know? Coral reefs are the second most diverse ecosystems on Earth. They are often called the rain forests of the sea. Coral reefs are formed when corals grow in shallow water close to the shore of continents or smaller islands. Usually in tropical or sub-tropical waters. The largest coral reef is The Great Barrier Reef in Australia, and it can be seen from space!
FUN FACT: Corals lay down annual rings like trees do!