It is coral reef still close to the sea level.

They are often seen in areas around coral reefs near the sea floor.

This means that most coral reefs are less than 10,000 years old.

A coral reef is a good place for plants to grow.

This species of fish has been found in and around coral reefs.

Straight to the bottom and out among the coral reefs.

He is best known for his work on climate change and coral reefs.

The current is strong, so swimming beyond the coral reef takes effort.

This represented about 5% of the coral reef in the area.

It is the only research facility in the world built on a coral reef.