The Meso American Reef

By Robert & Joanne M Birce of Alma Libre

diver with a school of fish on the Mesoamerican Reef
Did you know that the second largest reef in the world is located right off the coast of the Mayan Riviera? The Mesoamerican Reef (M.A.R.) system is nearly 700 miles long, beginning at the top of the Yucatan Peninsula it, stretches through the Caribbean waters of the Mayan Riviera all the way to Belize and on to the northern tip of Honduras. It is the largest coral reef system in the Atlantic.

The reef was largely undamaged by the events of Hurricane Wilma. Directly after the storm workers and volunteers spent several days clearing debris from the coral system directly in front of Puerto Morelos. After all this it appears that we gained more residents at the reef, the number of fish has increased substantially post Wilma.

diver with a school of fish on the Mesoamerican Reef
We spoke with Dr. Paul Blanchon, a geologist who is studying the reef at the National University of Mexico (UNAM) research centre in Puerto Morelos. Dr. Blanchon tells us that the M.A.R. is approximately 7,000 years old and is unique to the Western Hemisphere not only for its size, but also because of its array of reef types with more than 65 species of corals and 500 species of fish.

The M.A.R. is part of an interconnected system of currents and environments. It is one of the region's greatest natural assets. The massive structure provides an important defence against storms and coastal erosion. The reef system is made up of four elements; the mangrove, the beach, the reef and the shallow shelf. Each one of theses elements is interconnected to work with the others to keep the reef healthy and functioning. Damage to one element will affect them all.

Reefs can only thrive in waters that are free of excess nutrients like open-ocean water. Reefs are most commonly found around river-less oceanic islands in the Tropics and are less com