The Mariana Trench Is 36,000 Feet Deep, and an Ocean Mystery Full of Life

The islands were part of a trusteeship granted to the United States by the United Nations in 1947; in 1978 they chose to become a self-governing commonwealth and achieved this formal status upon the dissolution of the trust territory in 1986. In that year Jesuit missionaries changed the islands’ name from Islas de los Ladrones (Thieves’ Islands) in order to honour Mariana of Austria, then regent of Spain. The more important islands of the commonwealth are Saipan, Tinian, Agrihan, and Rota. They are the highest slopes of a massive undersea mountain range, rising some 6 miles (9.5 km) from the Marianas Trench in the ocean bed and forming a boundary between the Philippine Sea and the Pacific Ocean.

The weight of the ocean above it creates pressure around 15,750 pounds per square inch (more than 1,000 times what we experience on land) and the alien world is devoid of light. The Mariana Trench is the deepest part of the world's oceans, located in the western Pacific Ocean. So deep that the Mariana Trench, hidden beneath the ocean’s waves, would surpass Mount Everest in height, if our planet's tallest mountain were placed inside it upside down. The Mariana Trench is one of the deepest points in the ocean and an abundance of marine life can thrive in its depths. Photos that are the property of TurnKey Solutions are licensed exclusively to the Marianas Visitor’s Authority for use on mymarianas.com.

• It is located to the east of the Mariana Islands, a chain of volcanic islands, where it gets its name.
• Research indicates they scavenge on debris floating down from upper ocean zones.
• Some measurements in the Mariana Trench have charted depths exceeding 6.5 miles (or 36,000 feet) in the deepest spot, dubbed Challenger Deep.
• Incidentally it is also the first and the longest of the ocean-crossing voyages of the Austronesian peoples into Remote Oceania, and is separate from the later Polynesian settlement of the rest of Remote Oceania.

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The island chain arose as a result of the western edge of the Pacific Plate moving westward and plunging downward below the Mariana plate, a region which is the most volcanically active convergent plate boundary on Earth. Archaeologists in 2013 reported findings which indicated that the people who first settled the Marianas arrived there after making what may have been at the time the longest uninterrupted ocean voyage in human history. With continued research into the deepest points of our ocean, the mysteries held in the Mariana Trench are slowly being revealed.

Loss from Spain and split in governance

With the arrival of passengers and settlers aboard the Manila Galleons from the Americas, new diseases were introduced in the islands, which caused many deaths in the native Chamorro population. But it was not possible, for the people of those islands entered the ships and robbed us so that we could not protect ourselves from them. This water is super-heated as the plate is carried farther spin class jacksonville fl downward and results in the volcanic activity which has formed the arc of Mariana Islands above this subduction region. This subduction region, just east of the island chain, forms the noted Mariana Trench, the deepest part of the Earth's oceans and lowest part of the surface of the Earth's crust.

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Under the terms of the Treaty of Versailles in 1919, Germany was stripped of all her colonies worldwide, including the Palau, Caroline, Northern Mariana and Marshall Islands. The Northern Marianas and other island groups were incorporated by Germany as a small part of the larger German Protectorate of New Guinea. The Marianas and specifically the island of Guam were a stopover for Spanish galleons en route from Acapulco, Mexico to Manila, Philippines in a convoy known as the Galeon de Manila.

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The island chain geographically consists of two subgroups, a northern group of ten volcanic main islands, all are currently uninhabited; and a southern group of five coralline limestone islands (Rota, Guam, Aguijan, Tinian and Saipan), all of which are inhabited except for Aguijan. The Marianas were the first islands Magellan encountered after traversing the Pacific from the southern tip of South America. The islands were named after the influential Spanish queen Mariana of Austria following their colonization in the 17th century. A 2010 multibeam sonar survey of the Mariana Trench by the University of New Hampshire found new seafloor features, and obtained the most precise measurement of Challenger Deep— 10,994 meters (6.8 miles), plus or minus 40 meters (.02 miles). The sound waves sent from the echo sounder bounce off the bottom of the ocean and are plotted on a graph to make a map of the ocean bottom. When you dive into a swimming pool and go all the way to the bottom of the deep end, you can often feel the hydrostatic pressure against your eardrums—a feeling of having them squeezed or pushed in.

Deep-Sea Creatures Living in the Trench

Located in the western Pacific Ocean, east of the Philippines, the Mariana Trench is a crescent-shaped scar in Earth’s crust that measures more than 1,500 miles (2,550 kilometers) long and 43 miles (69 kilometers) wide on average. Just last year, Dawn Wright, an oceanographer who specializes in marine geology, became the first Black researcher to descend to the bottom of Challenger Deep. One crew recently acquired water samples from the depths for the Natural History Museum in Washington D.C. Since then, roughly half a dozen ocean explorers have successfully reached the bottom of the Mariana Trench — and many more remotely operated vehicles have completed expeditions. Canadian filmmaker and ocean explorer James Cameron made a similar solo journey into the abyss in 2012.

The islands were a popular port of call for British and American whaling ships in the 19th century. The native population, who referred to themselves as Taotao Tano (people of the land) but were known to the early Spanish colonists as Chamurres or HachaMori, eventually died out as a distinct people, though their descendants intermarried. In 1667, Spain formally claimed them, established a regular colony there and in 1668 gave the islands the official title of Las Marianas, in honor of Spanish Queen Mariana of Austria, widow of King Philip IV of Spain and Queen Regent of the Spanish Empire ruling during the minority of her son King Charles II.

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