We’ve all heard about these beautiful and diverse underwater ecosystems. Coral reefs, or colonies of corals built buy tiny sea creatures exist in numerous places throughout the world. Scientists and Researchers have found unique and interesting coral reefs after adventuring the seas. After some exploring, they noted which ones were the largest and where they were found. Have you ever wondered where the largest coral reefs in the world are located? Read the list below to find out.

1. Great Barrier Reef, Australia: The Great Barrier Reef, located off the coast of Queensland, Australia, is documented as the largest coral reef on Earth. This 2300 Km long ecosystem is even seen from outer space! It’s made up of 600 types of coral and is home to fish, mollusks, dolphins, turtles, and sharks. The Great Barrier Reef, larger than the Great Wall of China, is considered a natural wonder of the world due to its vastness and beauty


2. Apo Reef, Philippines: The Apo Reef is located on the Western Waters of Occidental Mindoro Province in the Mindoro Strait. Reaching 40 square Km, the Apo Reef is known for its large     number of sharks and turtles. This well-known reef has been declared a National Park. People pay an entrance fee to visit and stay on Apo Island to explore the reef.

Apo Reef

3. The Florida Key Reef System, United States: Being the only Reef system in North America, the Florida Keys Reef System makes an interesting and colorful phenomenon for people living in Florida. The Reef reaches 221 miles long, stretching across Florida’s Southeast Coast. It is also a protected underwater state Park.

Florida Keys

4.  Red Sea Coral Reef, Red Sea: Located off the coasts of Egypt, Israel, and Saudi Arabia, the Red Sea Coral Reef is the Northernmost Reef in the Indian Ocean. The reef is known for its shallow submarine shelves and braiding reef systems. It hosts more than 1000 different species, some so rare that they are unclassified. Due to the lack of river discharge, the water that this Reef   is found in is extra clear. Therefore, it would be easy to see the gorgeous Reef’s colors and diversity by traveling on a boat or visiting a nearby island. There are about 300 different hard coral             species alone recorded as living in the Red Sea Coral Reef. (About four times the diversity found on Caribbean Reefs).

Red Sea

5. Belize Barrier Reef, Belize: Located on the coast of Belize, the Belize Barrier Reefs consists of 185-miles of coral reefs. This Reef is protected by the UNESCO Heritage Program, making it a widely-known and largely diverse Reef full of knowledge and interesting facts about Corals. This Reef also includes a wonder called the Blue Hole, a giant submarine sink hole that’s visible from   outer space. The Blue Hole is popular among scuba divers.

Belize Reef


Coral Reefs are home to 25% of all marine life on the Planet. These Reefs are just a few of the largest Coral Reefs on the planet, providing sea creatures habitats and protecting coastlines. The large phenomenal Reefs are so amazing that they are documented by various scientists. Keep in mind these great Coral Reefs for the next time you decide to explore the seas.



  1. Robitaille, Joanne. Top Ten Largest Coral Reefs. USA Today. Travel Tips.