Deepest ever dive finds plastic bag at bottom of Mariana Trench

Deepest ever dive finds plastic bag at bottom of Mariana Trench

Vescovo was part of a mission to chart the world's deepest underwater places, and the Mariana Trench is considered the deepest place in the ocean, according to the BBC.

On the deepest dive ever made by a human inside a submarine, a United States explorer saw something he could have found in the gutter of almost any street in the world: rubbish.

The last visit to Challenger Deep also set a depth record at 35,787 feet.

In the depths, during those five dives, they discovered red and yellow rocky outcrops that could be chemical deposits or bacterial mats, which are made by chemosynthetic microbes, meaning they can convert carbon-containing molecules into organic matter.

Plastic waste has reached epidemic proportions with an estimated 100 million tonnes of it now found in the world's oceans, according to the United Nations.

Dr. Alan Jamieson, the expedition's chief scientist, stands on top of the submersible the Limiting Factor, which plumbed the depths of the Mariana Trench on missions between April 28 and May 5, 2019.

Over four hours exploring the seabed of the trench he saw sea creatures, plastic bags and lolly wrappers.

Vescovo broke the previous Mariana Trench diving record by about 36 feet.

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Filmmaker and National Geographic Explorer-in-Residence James Cameron emerges from the Deepsea Challenger submersible after his successful solo dive to the Mariana Trench, the deepest part of the ocean, March 26, 2011. It's part of the Five Deeps Expedition, which is charting the ocean's five deepest areas.

"It is nearly indescribable how excited all of us are about achieving what we just did", said Vescovo in a statement emailed to IFLScience.

He spent four hours exploring the bottom of the trench in his sub, built to withstand the vast pressure of the deep ocean.

Vescovo's team made a total of five dives into the trench over the course of the expedition, during which the team reportedly may have discovered four never-before-seen species of amphipods.

Vescovo also made progress toward his larger goal.

These conditions also made it challenging to capture footage - the Five Deeps expedition has been followed by Atlantic Productions for a documentary for the Discovery Channel.

"Our team had to pioneer new camera systems that could be mounted on the submersible, operate at up to 10,000m below sea level and work with robotic landers with camera systems that would allow us to film Victor's submersible on the bottom of the ocean".

When the Five Deeps expedition is complete, the researchers plan to pass their findings onto science institutions, which will continued to use their information for studies.

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