Where do you find deep-sea trenches?

Ocean trenches are found in every ocean basin on the planet, although the deepest ocean trenches ring the Pacific as part of the so-called “Ring of Fire” that also includes active volcanoes and earthquake zones. Ocean trenches are a result of tectonic activity, which describes the movement of the Earth’s lithosphere.

Who found the Mariana Trench?

Everest, the Mariana Trench was first pinpointed in 1951 by the British Survey ship Challenger II. Known since as Challenger Deep, it was not visited for nearly ten years. Jacques Piccard and Don Walsh descended in a submersible called the Trieste, which could withstand over 16,000 pounds of pressure per square inch.

What did James Cameron discover?

The discovery of microbial mats — bizarre-looking, filamentlike clumps of microorganisms — living off chemicals from altered rocks 35,803 feet (10,912 meters) beneath the surface of the Pacific Ocean comes from samples and video collected by an unmanned lander, part of movie director James Cameron’s mission to the …

Why is the Marianas trench the deepest trench in the world?

One reason the Mariana Trench is so deep, he added, is because the western Pacific is home to some of the oldest seafloor in the world—about 180 million years old. Seafloor is formed as lava at mid-ocean ridges. When it’s fresh, lava is comparatively warm and buoyant, riding high on the underlying mantle.

What are the trenches in the world?

Here is a list of ten such points that mark the deepest points of oceans.

• Mariana Trench.
• Tonga Trench.
• Philippine Trench.
• Kuril- Kamchatka Trench.
• Kermadec Trench.
• Izu-Ogasawara Trench.
• Japan Trench.
• Puerto Rico Trench.

How deep are deep sea trenches?

Oceanic trenches are prominent long, narrow topographic depressions of the ocean floor. They are typically 50 to 100 kilometers (30 to 60 mi) wide and 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor, but can be thousands of kilometers in length.

Where is Mariana Trench located in the world map?

western Pacific Ocean
The Mariana Trench or Marianas Trench is located in the western Pacific Ocean about 200 kilometres (124 mi) east of the Mariana Islands; it is the deepest oceanic trench on Earth.

What is in the Mariana Trench?

The three most common organisms at the bottom of the Mariana Trench are xenophyophores, amphipods and small sea cucumbers (holothurians), Gallo said. “These are some of the deepest holothurians ever observed, and they were relatively abundant,” Gallo said.

Who visited Mariana Trench?

On 23 January 1960, two explorers, US navy lieutenant Don Walsh and Swiss engineer Jacques Piccard, became the first people to dive 11km (seven miles) to the bottom of the Mariana Trench. As a new wave of adventurers gear up to repeat the epic journey, Don Walsh tells the BBC about their remarkable deep-sea feat.

How was the Mariana Trench found?

In 1875, the trench was discovered by the HMS Challenger using recently invented sounding equipment during a global circumnavigation. In 1951, the trench was sounded again by HMS Challenger II. Challenger Deep was named after the two vessels.

What are three facts about Mariana Trench?

19 Mariana Trench Facts for Kids

• The Mariana Trench is a deep oceanic trench located in the Pacific Ocean.
• The Mariana Trench is the deepest oceanic trench in the world.
• The deepest part of the Mariana Trench is around 36,037 feet.
• The Mariana Trench was named after the Mariana Islands.

What is the meaning of deep sea trench?

deep-sea trench, also called oceanic trench, any long, narrow, steep-sided depression in the ocean bottom in which occur the maximum oceanic depths, approximately 7,300 to more than 11,000 metres (24,000 to 36,000 feet). They typically form in locations where one tectonic plate subducts under another.

What is the deepest sea trench in the world?

The Mariana Trench
The Mariana Trench, in the Pacific Ocean, is the deepest location on Earth. According to the Exclusive Economic Zone (EEZ), the United States has jurisdiction over the trench and its resources.

What are water trenches?

How many oceanic trenches are found in the Indian Ocean?

The deepest places on the ocean floor are called trenches. These troughs extend to great depths, and in the Indian Ocean, there are two particularly deep trenches: the Java Trench and the Diamantina Trench.

What is the Mariana Trench famous for?

The Mariana Trench is the deepest oceanic trench on Earth and home to the two lowest points on the planet.

What are three facts about the Mariana Trench?

Who went to Mariana Trench?

Who was the first person to explore the Mariana Trench?

The first and only time humans descended into the Challenger Deep was more than 50 years ago. In 1960, Jacques Piccard and Navy Lt. Don Walsh reached this goal in a U.S. Navy submersible, a bathyscaphe called the Trieste.

What are deep sea trenches and where are they located?

Deep-sea trenches generally lie seaward of and parallel to adjacent island arcs or mountain ranges of the continental margins. They are closely associated with and found in subduction zones—that is, locations where a lithospheric plate bearing oceanic crust slides down into the upper mantle under the force of gravity.

What is the weird life in the deep ocean trenches?

The Weird Life in the Deep Ocean Trenches . Surprisingly, despite the high water pressure and cold temperatures that exist at the bottoms of trenches, life does flourish in those extreme environments. It ranges from tiny one-celled organisms to tubeworms and other bottom-growing plants and animals, to some very strangel-looking fish.

How many ocean trenches exist in the world?

Ocean trenches exist in all the world’s oceans. They include the Philippine Trench, Tonga Trench, the South Sandwich Trench, the Eurasian Basin and Malloy Deep, the Diamantina Trench, the Puerto Rican Trench, and the Mariana.

How do animals survive in the ocean trenches?

Organisms that live in ocean trenches have evolved with unusual adaptations to thrivein these cold, dark canyons. Their behavior is a test of the so-called “visual interaction hypothesis,” which states that the greater an organism’s visibility, the more energy it must expend to catch preyor repelpredators.