Coral reefs are among the most beautiful places in the world.
If we visit a coral reef, using a face mask, a look box or looking through a glass-bottom boat, we see a strange and wonderful world. Corals of different shapes and sizes and colors grow here. Large coral reefs form masses of stony rock. They create food and shelter for other living creatures. Many kinds of small plants and animals live on, around, and within these coral boulders.