All About Coral Reefs Some fun facts about coral reefs! Coral
reefs are found in warm, shallow and clear waters of tropical
oceans all around the world. They are extremely beautiful,
diverse and productive. Today coral reefs are highly endangered
mostly due to human activities. - Coral reefs are massive
limestone structures that occupy only 0.7% of the ocean floor
but provide shelter for over 25 percent of all marine life. -
Although coral is often mistaken for a rock or a plant, it is a
living organism composed of tiny, fragile animals called coral
polyps. - Coral reefs provide protection for harbors and beaches
from heavy wave action caused by coastal storms. - They are
responsible for building the largest biological structure on
earth -- the Great Barrier Reef.