Internet Resources Introduction Corals are really tiny animals called polyps. When the polyps die, they leave limestone skeletons behind that build up and form barriers and ridges in the oceans called coral reefs. These coral reefs can be very large. They can even rise up out of the ocean and form coral islands. Many of the islands in the Pacific are coral islands.
Coral reefs provide homes for many sea animals.
Most coral reefs are found in warm and tropical oceans. Come join our internet hunt and find out more about coral reefs. The questions follow the exact order of the links. Questions Look at this map and determine in what part of the world most coral reefs are located. Describe the physical characteristics of a coral polyp.