"Boulder corals" refers to a type of coral that grows in large, rock-like clusters on the ocean floor. They are called "boulder corals" because their appearance resembles big stones or boulders. Full definition
Although not quite up to the standard of the barrier reef, the 10 to 13ft (3 - 4m) high colonies of boulder corals reach almost to the surface and give refuge to a variety of marine life. (Dive-The-World.com)
The addition of Mexico Rocks to this protected status means that the large boulder coral formations unique to this area and found only at one other site in Belize, far to the south at Glover's Reef, will be protected far into the future. (sandypointresorts.com)
The BBQ trip again includes snorkeling, this time at Mexico Rocks, known for its large boulder coral formations and resident sea turtles. (sandypointresorts.com)