Apo Reef marine park opened for tourists to help generate funds for its protection as well as provide an alternative livelihood for hundreds of fishermen in the area. All people accessing Apo Reef need to pay an environmental fee. Apo Reef Apo Reef is a coral reef system in the Philippines situated on the western waters of Occidental Mindoro province in the Mindoro Strait. Encompassing , it is by no means the world's second-largest contiguous coral reef system, but is the largest in the country. The reef and its surrounding waters are protected areas in the country administered as the Apo Reef
Artificial reef water off the coast of Pensacola, Florida and then used as a target for experimental artillery. In 1956 the ship was declared the property of the state of Florida by the Florida Supreme Court. Since 1993 the wreck has been a Florida Underwater Archaeological Preserve and is included in the National Register of Historic Places. She serves as an artificial reef and diving spot. The world's largest artificial reef was created by the purposeful sinking of the 44,000 ton aircraft carrier off the coast of Pensacola, Florida, in 2006. The second-largest artificial reef is USNS "Hoyt S. Vandenberg", a former