| UNESCO World Heritage Site | |
|---|---|
 Northern tip ofGrande Terre | |
| Location | New Caledonia (state party:France) |
| Includes |
|
| Criteria | Natural: (vii), (ix), (x) |
| Reference | 1115 |
| Inscription | 2008 (32ndSession) |
| Area | 1,574,300 ha (3,890,000 acres) |
| Buffer zone | 1,287,100 ha (3,180,000 acres) |
| Coordinates | 20°24′43″S164°33′59″E / 20.41194°S 164.56639°E /-20.41194; 164.56639 |
  Location of New Caledonian barrier reef in New Caledonia  New Caledonian barrier reef (Oceania) Show map of Oceania | |
TheNew Caledonian barrier reef is abarrier reef located inNew Caledonia in theSouth Pacific, being the longest continuous barrier reef in the world and the third largest after theGreat Barrier Reef of Australia and theMesoamerican Barrier Reef.
The New Caledonian barrier reef surroundsGrande Terre, New Caledonia's largest island, as well as theIle des Pins and several smaller islands, reaching a length of 1,500 kilometres (930 mi). Thereef encloses alagoon of 24,000 square kilometres (9,300 sq mi), which has an average depth of 25 metres (82 ft). The reefs lie up to 30 kilometres (19 mi) from the shore, but extend almost 200 kilometres (120 mi) to the Entrecasteaux reefs in the northwest. This northwestern extension encloses theBelep Islands and other sandcays. Several natural passages open out to the ocean. The Boulari passage, which leads toNouméa, the capital and chief port of New Caledonia, is marked by theAmédée lighthouse.
In 2008, the barrier reef and its enclosing lagoon was inscribed on theUNESCOWorld Heritage List for its outstanding beauty, its unique geography as a reef entirely encircling Grande Terre, and its exceptional marine diversity (in particular its coral diversity).[1]
The reef systems of New Caledonia are considered to be the second largest in the world after the Great Barrier Reef of Australia, the longest continuous barrier reef in the world with a length of 1,600 km and its lagoon, the largest in the world with an area of 24,000 square kilometers. This ecosystem hosts along withFiji, the world's most diverse concentration of reef structures, 146 types based on a global classification system, and they equal or even surpass the much larger Great Barrier Reef in coral and fish diversity.[1]
The reef has great species diversity with a high level of endemism. In total, there have been 2328 fish species observed in the reef, belonging to 248 families.[2] In addition, the reef is home to third-largest population of endangereddugongs(Dugong dugon) on Earth, and is an important nesting site forgreen sea turtles(Chelonia mydas).[1]
In the lagoons of New Caledonia there are many other marine species, including over 2000 species of molluscs[3] and a thriving population ofhumpback whales.[4]
Most of the reefs are generally thought to be in good health. Some of the eastern reefs have been damaged by effluent fromnickel mining on Grand Terre.Sedimentation frommining,agriculture, andgrazing has affected reefs near river mouths, which has been worsened by the destruction ofmangrove forests, which help to retain sediment. Some reefs have been buried under several metres of silt.[5] In 2008, an assessment of northwest near-shore reefs concluded that many would be dead within years, and at best decades, if present trends relating to mining sediment and silt run-off continued.[6]
In January 2002, theFrench government proposed listing New Caledonia's reefs as aUNESCOWorld Heritage Site. UNESCO listed New Caledonia barrier reef on the World Heritage List under the nameThe Lagoons of New Caledonia: Reef Diversity and Associated Ecosystems on 7 July 2008.[1]
There are 13 local management committees, composed of tourist operators, fishermen, politicians and chiefs of local tribes which work with the community to monitor the health of the lagoons.[7]
Scuba Diving is common, with several dive sites in the lagoon and around the reef. These include the Prony needle, the Shark Pit and the Cathedral.[8]
