5. By Alaa Elassar, CNN. Few people know that the second largest coral reef barrier in the world is located within the maritime territory belonging to Mexico. It covers a staggering 133,000 square miles and is home to more than 1,500 fish species and 400 types of hard corals, according to CNN. limestone. Scientists found … USA Today. It is made up of around 2900 individual reefs and 900 islands. The Amazon Reef (also referred to as the Amazonian Reef) is an extensive coral and sponge reef system, located off the coast of French Guiana and northern Brazil. Top Ten Largest Coral Reefs. The baby ridged cactus corals. Coral reefs are made up of calcium carbonate. The Great Barrier Reef is the world’s largest living structure. A coral reef is a ridge or a mound of limestone whose upper surface is near the surface of the sea. The Great Barrier Reef is the largest coral reef system in the world. by holly kaltner | May 2, 2016 | Coral Reefs. Have you ever wondered where the largest coral reefs in the world are located? The Red Sea Coral Reef includes the Dahab Blue Hole, one of the most popular and dangerous dive sites in the world. It is also a protected underwater state Park. Coral reefs, or colonies of corals built buy tiny sea creatures exist in numerous places throughout the world. 1. The Lakshadweep Islands themselves are built on top of coral reefs and covered with coral sand. There are about 300 different hard coral             species alone recorded as living in the Red Sea Coral Reef. The reef extends from Ambergris Caye in the north to the Sapodilla Cayes in the south. Gordon Reef in Egypt. The Great Barrier Reef, the world’s largest coral reef, covers nearly 133,000 square miles and is home to more than 1,500 species of fish, 411 species of hard corals and dozens of other species. JUST WATCHED Along with its coral reefs, the marine habitat includes feeding grounds for the green turtle and breeding grounds for blue whales. Keep in mind these great Coral Reefs for the next time you decide to explore the seas. The Blue Hole is popular among scuba divers. The largest fish in the sea is the Whale _____ ... and this skeleton forms the underlying hard structure of a coral reef. The Red Sea Coral Reef off the coasts of Egypt, Israel and Saudi Arabia is approximately 5,000 to 7,000 years old. More than 1000 different species-- some of which are still unclassified -- live within the reef. Therefore, it would be easy to see the gorgeous Reef’s colors and diversity by traveling on a boat or visiting a nearby island. (About four times the diversity found on Caribbean Reefs). The Longest Coral Reefs in the World. This 2300 Km long ecosystem is even seen from outer space! As the world’s largest coral reef, the Great Barrier Reef includes more than 900 islands, more than 2,900 separate reefs, and supports one of the most diverse ecosystems in the world. Robitaille, Joanne. Read the list below to find out. Scientists hope this year's reproductive cycle can revitalise the world's largest reef that's been degrading and dying. 2. The reef is made up of 3000 reef systems and is the only living organism that’s visible from space. ReefNation.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. Red Sea Coral Reef, Red Sea. The reef is located in … Robitaille has a Bachelor of Arts in English and creative writing from the University of Windsor. The Great Barrier Reef is Earth’s largest coral reef. It is found in the Coral Sea, off the coast of Queensland, Australia. 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