Marianas Trench Marine National Monument Marine National Monument
Marianas Trench Marine National Monument, Northern Mariana Islands
MARINE PROTECTED AREA
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The Marianas Trench Marine National Monument is a United States National Monument created by President George W. Bush by the presidential proclamation no. 8335 on January 6, 2009. The monument includes no dry land area, but protects 95,216 square miles (60,938,240 acres) of submerged lands and waters in various places in the Mariana Archipelago.
The United States was able to act under international law and U.S. law to create this marine national monument, since the U.S. controls the Commonwealth of the Northern Mariana Islands and Guam which act as the land (island) boundaries of the oceanic zones which form the monument's protected areas of ocean waters and submerged lands (ocean beds).
The Mariana Trench Marine National Monument consists of 95,216 square miles (60,938,240 acres). The monument consists of submerged lands and waters of the Mariana Archipelago. It includes three units:
No waters are included in the Volcanic and Trench Units, and CNMI maintains all authority for managing the three islands within the Islands Unit above the mean low water line. The Interior Secretary placed the Mariana Trench and Volcanic Units within the National Wildlife Refuge System, and delegated his management responsibility to the Fish and Wildlife Service.
The Secretary of Commerce, through the National Oceanic and Atmospheric Administration, has primary management responsibility for fishery-related activities in the waters of the Islands Unit.
In the Islands Unit, unique reef habitats support marine biological communities dependent on basalt rock foundations, unlike those throughout the remainder of the Pacific. These reefs and waters are among the most biologically diverse in the Western Pacific and include the greatest diversity of seamount and hydrothermal vent life yet discovered. They also contain one of the most diverse collections of stony corals in the Western Pacific, including more than 300 species, higher than any other U.S. reef area.
The submerged caldera at Maug is one of only a few known places in the world where photosynthetic and chemosynthetic communities of life coexist. The caldera is some 1.5 miles wide and 820 feet deep, an unusual depth for lagoons. The lava dome in the center of the crater rises to within 65 feet of the surface. Hydrothermal vents at about 475 feet in depth along the northeast side of the dome spew acidic water at scalding temperatures near the coral reef that quickly ascends to the sea surface. Thus, coral reefs and microbial mats are spared much of the impact of these plumes and are growing nearby, complete with thriving tropical fish. As ocean acidification increases across the Earth, this caldera offers scientists an opportunity to look into the future and ensure continuation of coral reef communities. The Mariana Arc of Fire National Wildlife Refuge (Volcanic Unit) - an arc of 21 undersea mud volcanoes and thermal vents - supports unusual life forms in some of the harshest conditions imaginable. Here species survive in the midst of hydrothermal vents that produce highly acidic boiling water.
The Challenger Deep, located just outside of the Trench Unit, is the deepest point in the Earth's oceans, deeper than the height of Mount Everest above sea level. It is five times longer than the Grand Canyon and includes some 78,956 square miles (204,500 km2) of virtually unexplored underwater terrain. Sirena Deep, about 6.6 miles beneath the surface, is the deepest point of the Mariana Trench Marine National Monument.
In a White House release the first word is pluralized as Marianas, in another seemingly official source it is named Mariana, and in some news reports it appeared as Marianas Marine National Monument, omitting the word "Trench". In common usage, the trench is alternatively named Marianas Trench or Mariana Trench.
The actual text of the proclamation establishing it gives it the official name Marianas Trench Marine National Monument.
johnegourley commented on the Site
over 1 year ago
"It should be made clear that the Marianas Trench National Marine Monument DOES NOT include the islands of Uracas, Maug, and Asuncion. These three islands are LOCALLY DESIGNATED as wildlife reserves in the CNMI Constitution. The Islands Unit of the MTMNM surrounds these three islands up to the low water mark. "
cyesson commented on the Site
almost 2 years ago
"There is a kmz file available from MCBI that details the true spatial extent of the area of national marine monuments (http://mcbi.marine-conservation.org/what/what_pdfs/MarineNationalMonuments.kmz)"
cyesson commented on the Site
almost 2 years ago
"The fish & wildlife service has a website detailing the spatial extent of this MPA. Main page (http://www.fws.gov/marianastrenchmarinemonument/) Map of area (http://www.fws.gov/marianastrenchmarinemonument/MTMNM%20map.pdf)."
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The boundaries and names shown, and the designations used on this map do not imply official endorsement or acceptance by the United Nations.
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