The hidden world under the sea: Scientists find 'parallel universe' of life INSIDE the basalt of the
“The intense pressures in the deep ocean make it an extremely difficult environment to explore.” Although you don't notice it, the pressure of the air pushing down on your body at sea level is about 15 pounds per square inch. If you went up into space, above the Earth's atmosphere, the pressure would decrease to zero.
Several animals observed in the biocube were photographed with the ROV because of their large size and extremely delicate gelatinous bodies. As in all habitats, most animals in the midwater are tiny—microscopic crustaceans like copepods and amphipods, worms, sea butterflies, and a myriad of other unusual species.
Earth has a sixth ocean, a new study suggests, but not where you can see. It's hundreds of kilometres below the surface. The international study published in Nature Geoscience says this vast reservoir of water is located in the so-called transition zone between the upper and lower mantle at a depth of 410 to 660 kms.
Last year an expedition to the Mariana Trench made history by conducting the deepest crewed dive ever completed as it descended 10,927 metres into the Challenger Deep.
Both manned and unmanned vessels have reached these depths, called Challenger Deep. It was long thought nothing could live in the Mariana Trench, but robotic probes have revealed worms, shrimp, and microorganisms.
Drinking seawater can be deadly to humans.
While humans can safely ingest small amounts of salt, the salt content in seawater is much higher than what can be processed by the human body.
Point Nemo isn't just remote for humans—its location makes it fairly devoid of any animal life. Oceanographer Steven D'Hondt goes as far as to call it “the deadest spot in the ocean.” It sits in the center of the South Pacific Gyre—a massive, rotating current encompassing an area twice the size of North America.
The organisms discovered in the Mariana Trench include bacteria, crustaceans, sea cucumbers, octopuses and fishes. In 2014, the deepest living fish, at the depth of 8000 meters, Mariana snailfish was discovered near Guam.
The seabed (also known as the seafloor, sea floor, ocean floor, and ocean bottom) is the bottom of the ocean. All floors of the ocean are known as 'seabeds'.
Just 5% of Earth's landscape is untouched.
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. Challenger Deep is approximately 10,935 meters (35,876 feet) deep.
How Much Treasure is Down There? The short answer, Sean Fisher says, is $60 billion. Fisher is a shipwreck hunter at Mel Fisher's Treasures in Key West (Sean is Mel's grandson), and he gives this figure based on his company's historical research.
Hidden inside the Earth—within the first several hundred kilometers below the crust—there is another ocean. It is, most likely, the largest ocean in the world. This water is not sloshing around in a big pool.
Dead zones occur in coastal areas around the nation and in the Great Lakes — no part of the country or the world is immune. The second largest dead zone in the world is located in the U.S., in the northern Gulf of Mexico.
Scientists have identified 415 dead zones worldwide. Hypoxic areas have increased dramatically during the past 50 years, from about 10 documented cases in 1960 to at least 169 in 2007.
These massive loads of nutrients eventually end up in our coastal ocean, fueling a chain of events that can lead to hypoxic "dead zones" — areas along the sea floor where oxygen is so low it can no longer sustain marine life.
One of the most well-known techniques used to obtain safe drinking water is through distillation. You can safely drink the salt-free water vapor collected when you boil seawater.
José Salvador Alvarenga holds the record for the longest solo survival at sea. He was adrift for 438 days, and traveled over 6,700 miles.
Avoid using rainwater for drinking, cooking, brushing your teeth, or rinsing or watering plants that you intend to eat. Instead, use municipal tap water if it is available, or purchase bottled water for these purposes.
The whole time, Cameron said, he didn't see any fish, or any living creatures more than an inch (2.5 centimeters) long: "The only free swimmers I saw were small amphipods"—shrimplike bottom-feeders that appear to be common across most marine environments.
Thousands have climbed Mount Everest, and a handful of people have walked on the moon. But reaching the lowest part of the ocean? Only three people have ever done that, and one was a U.S. Navy submariner.
Therefore, the deep ocean (below about 200 meters depth) is cold, with an average temperature of only 4°C (39°F). Cold water is also more dense, and as a result heavier, than warm water. Colder water sinks below the warm water at the surface, which contributes to the coldness of the deep ocean.