Mysterious noises have been coming from the Mariana Trench, the deepest ocean trench, since 2014. Scientists now finally know the reason behind them. Described as "biotwang" noises, they sound like something emanating from sci-fi starships.

Creepy sounds are echoing through Mariana Trench, and we now know the cause

A team of scientists from China and Australia exploring the Pacific Ocean have stumbled upon a new type of virus 8.9 kilometres below sea level. They found the virus in sediments taken from the Mariana Trench in the western Pacific Ocean.

Scientists find new virus at depths of Pacific Ocean

Unsettling discovery of deepest place on Earth: Trash found littering Mariana Trench floor

Victor Vescovo, a retired naval officer, made the unsettling discovery as he descended nearly 6.8 miles (35,853 feet/10,928 meters) to a point in the Pacific Ocean's Mariana Trench that is the deepest place on Earth, his expedition said in a statement on Monday. His dive went 52 feet (16 meters) lower than the previous deepest descent in the trench in 1960.

Deepest dive ever made by a human inside a submarine

An American diver broke the record for deepest submarine dive ever and found something disheartening at the bottom of the ocean — a plastic bag. Victor Vescovo traveled seven miles down to the deepest part of the ocean, Mariana Trench in the Pacific.

American breaks record with deepest submarine dive ever, finds plastic waste

On the deepest dive ever made by a human inside a submarine, a Texas investor found something he could have found in the gutter of nearly any street in the world: trash.

Trash found littering ocean floor in deepest-ever sub dive

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Creepy sounds are echoing through Mariana Trench, and we now know the cause

Scientists find new virus at depths of Pacific Ocean

Unsettling discovery of deepest place on Earth: Trash found littering Mariana Trench floor

Deepest dive ever made by a human inside a submarine

American breaks record with deepest submarine dive ever, finds plastic waste

Trash found littering ocean floor in deepest-ever sub dive

Trash found littering ocean floor in deepest-ever sub dive