# What is the average depth of ocean water?

Its average depth is about 3,688 meters (12,100 ft), and its maximum depth is 10,994 meters (6.831 mi) at the Mariana Trench. Nearly half of the world’s marine waters are over 3,000 meters (9,800 ft) deep. The vast expanses of deep ocean (anything below 200 meters or 660 feet) cover about 66% of Earth’s surface.

Just so, what is the unit to measure the depth of ocean?

A fathom is a unit of length in the imperial and the U.S. customary systems equal to 6 feet (1.8288 m), used especially for measuring the depth of water. There are two yards (6 feet) in an imperial fathom.

How do we measure the depth of the ocean?

The weight is pulled back up and the distance from the surface mark to the weight is measured. This length equals the depth of the ocean at that point. This method of seafloor mapping is very time consuming, especially when charting deep water. The invention of sonar changed the way that the seafloor is mapped.

What instrument is used to measure the depth of the ocean?

Depth finder. Depth finder, also called echo sounder, device used on ships to determine the depth of water by measuring the time it takes a sound (sonic pulse) produced just below the water surface to return, or echo, from the bottom of the body of water.

## What are the 7 seas and 5 Oceans?

Since the 19th century, the term has been taken to include seven oceanic bodies of water:

• the Arctic Ocean.
• the North Atlantic Ocean.
• the South Atlantic Ocean.
• the Indian Ocean.
• the North Pacific Ocean.
• the South Pacific Ocean.
• the Southern (or Antarctic) Ocean.
• ## How far have we gone in the ocean?

(CBS/AP) Director James Cameron has gone were no man has gone before: to the deepest depths of the ocean. Late Sunday, partnering organization National Geographic announced his ocean submersible had reached a depth 35,756 feet; “a figure unattainable anywhere else in the ocean.”

## How deep can you dive?

Man Sets New World Record For Deepest Scuba Dive After Plunging More Than 1,000 Feet. Scuba organizations say recreational divers shouldn’t go below about 130 feet, but one Egyptian diver recently ventured a bit deeper — going more than 1,000 feet below the ocean surface and setting a world record in the process.

## Where is the deepest part of the ocean located?

The deepest part of the ocean is in the Mariana Trench (sometimes called the Marianas Trench), located in the western Pacific Ocean. At its deepest part, it’s just under 7 miles (6.831 miles / 10.994 km / 10,994 meters) deep.

## How deep is the deepest part of the ocean?

10,994 meters

## What is the average depth of the Atlantic Ocean?

The average depth of the Atlantic, with its adjacent seas, is 3,339 metres (10,955 ft); without them it is 3,926 metres (12,881 ft). The greatest depth, Milwaukee Deep with 8,605 metres (28,232 ft), is in the Puerto Rico Trench.

## Which is the deepest ocean in the world?

Pacific Ocean

## How much of the world’s oceans have been explored?

To date, we have explored approximately five percent of the ocean. Much remains to be learned from exploring the mysteries of the deep. The ocean is the lifeblood of Earth, covering more than 70 percent of the planet’s surface, driving weather, regulating temperature, and ultimately supporting all living organisms.

## How deep is the Challenger Deep?

The Challenger Deep is the deepest known point in the Earth’s seabed hydrosphere, with a depth of 10,898 to 10,916 m (35,755 to 35,814 ft) by direct measurement from submersibles, and slightly more by sonar bathymetry. It is in the Pacific Ocean, at the southern end of the Mariana Trench near the Mariana Islands group.

## How deep is the water in the Gulf of Mexico?

The actual maximum depth is disputed and estimates range between 3,750 and 4,384 metres (12,303 and 14,383 ft). The average depth of the Gulf is roughly 1,615 metres (5,299 ft). The Sigsbee Abyssal Plain is the deepest and flattest sector of the deep basin.

## How many miles is the depth of the ocean?

The depth estimate of 2.3 miles is about 69 to 167 feet (21 to 51 meters) less than previous estimates. (Some areas of the ocean, such as the Mariana Trench (at nearly 7 miles or 11 km deep) are of course much deeper than the average, while other areas, such as the Mid-Atlantic Ridge are shallower.)

Lake Baikal

## Where is the deepest part of the Indian Ocean?

The Indian Ocean’s average depth is 12,990 feet (3,960 metres), and its deepest point, in the Sunda Deep of the Java Trench off the southern coast of the island of Java (Indonesia), is 24,442 feet (7,450 metres).

## How deep is the earth?

The Earth’s radius is about 4,000 miles (6,400 kilometers). The main layers of its interior are in descending order: crust, mantle and core. The crust thickness averages about 18 miles (30 kilometers) under the continents, but is only about 3 miles (5 kilometers) under the oceans.

## How much water is in the world’s oceans?

It’s roughly 326 million cubic miles (1.332 billion cubic kilometers), according to a recent study from the U.S. Geological Survey. Some 72 percent of Earth is covered in water, but 97 percent of that is salty ocean water and not suitable for drinking.

## What is the average depth of the Pacific Ocean?

The average depth of the ocean is about 12,100 feet . The deepest part of the ocean is called the Challenger Deep and is located beneath the western Pacific Ocean in the southern end of the Mariana Trench, which runs several hundred kilometers southwest of the U.S. territorial island of Guam.

## How much of the ocean is still unexplored?

Despite an increasing rate of species discovery, as much as 95 percent of the world’s oceans remain unexplored. “When you go to the deep sea, every time you take a sample, you’ll find a new species,” he says. “But we think the deep sea is less diverse than we thought previously.

## Where is the deepest part of the ocean?

Mariana Trench

## How deep in the ocean have we been?

At 5:52 p.m. ET Sunday (7:52 a.m. Monday, local time), James Cameron arrived at the Mariana Trench’s Challenger Deep, members of the National Geographic expedition have confirmed. His depth on arrival: 35,756 feet (10,898 meters)—a figure unattainable anywhere else in the ocean.

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