Apo Reef the flora, the fauna and the clarity of the water and white sand. Many species can be observed in deep or shallow waters in particular, sharks, giant napoleons, mantas and murenas. The coral is in good health and growing. The Apo Reef is a protected area of the Philippines classified as a Natural park encompassing . Of the total area, comprises the Apo Reef Natural Park while the remaining constitute a buffer zone surrounding the protected area. Prior to its declaration as a protected area, Apo Reef was first officially declared a "Marine Park" by then Philippine president Ferdinand Marcos
Osborne Reef Osborne Reef Osborne Reef is an artificial reef off the coast of Fort Lauderdale, Florida, constructed of concrete jacks in a -diameter circle. In the 1970s, the reef was the subject of an ambitious expansion project utilizing old and discarded tires. The project ultimately failed, and the "reef" has come to be considered an environmental disaster—ultimately doing more harm than good in the coastal Florida waters. In 2007, after several false starts, cleanup efforts began when the United States military took on the project. This cleanup exercise provides the military with a real-world training environment for their diving and recovery