Deepest ever dive made by man into the Mariana trench unearths plastic

Explorer reaches deepest spot on Earth in historic dive

Sir David Attenborough, a naturalist and wildlife campaigner, reacted to Vescovo's unsavory find at the bottom of the Mariana Trench by calling plastic in the sea an "unfolding catastrophe" that we "ignore at our peril".

"It was very disappointing to see obvious human contamination of the deepest point in the ocean", Vescovo said.

U.S. man Victor Vescovo broke the record for the deepest dive ever in a submarine at a depth of 11 kilometres to the Mariana Trench. A total of four dives in eight days made it the first submersible to ever visit the bottom of the Challenger Deep a couple of times, capturing videos and conducting efficiency tests in the process. "I was surrounded by enormous pressure, but I was safely cocooned in my technological bubble."The pressure at that depth is about 16,000 pounds per square inch, over a thousand times more than the pressure at sea level".

Scientists plan to test the newly-discovered creatures to see if they contain microplastics.

He told BBC News: "I salute Victor Vescovo and his outstanding team for the successful completion of their historic explorations into the Mariana Trench".

Thus far, in addition to the Mariana Trench feat, Vescovo has become the first human to dive the deepest points in the Puerto Rico Trench of the Atlantic Ocean (27,480 feet in December 2018), the South Sandwich Trench of the Southern Ocean (24,388 feet in January 2019) and the Java Trench in the Indian Ocean (23,596 feet in April 2019).

Plastic waste has been discovered on a record-breaking dive to the depths of the Pacific Ocean's Mariana Trench. Long before that, in 1960, Jacques Piccard and Don Walsh together descended 35,813 feet into the Mariana Trench. It was part of Vescovo's "Five Deeps expedition", his attempt to explore the deepest parts of all five oceans.

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Mr Vescovo found a plastic bag and lolly wrappers, as well as four new species of prawn.

"It is nearly indescribable how excited all of us are about achieving what we just did", Vescovo told BBC News.

A 90-millimeter-thick titanium pressure hull built to withstand the pressure of the deep.

He's also been to the highest peak of every continent and to the bottom of four of the world's oceans.

Movie director James Cameron - who made the films Titanic and Avatar - then made a dive in 2012 by himself in a bright green sub.

Vescovo also made progress toward his larger goal. "I'm hopeful that we'll be able to study the ocean before we destroy it". Atlantic Productions for Discovery Channel/Tamara Stubbs/Handout via REUTERS.

The challenges of exploring the deep ocean - even with robotic vehicles - has made the ocean trenches one of the last frontiers on the planet.

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