Coral reef
From Wikipedia, the free encyclopedia
A coral reef is a large underwater wall made of dead and living corals. The reefs are formed in tropical marine areas(30 degrees north and south of the equator). It acts as the home of many tropical fish and other animals. Coral reefs are a major tourism icon because of their beauty and color.
People look at them while snorkeling and diving. One example of a coral reef is in Malaysia at Pulau Tioman, off the State of Pahang.
Coral reefs can be very dangerous to ships, because they are usually underwater, but close to the top. This makes it hard for ships to see them, but are easy for ships to hit them.
Coral reefs are in danger of becoming damaged due to tourism.[needs proving] Coral reefs provide natual breakwater for the waves and most coral reefs are under threat of over fishing.
