The Red Sea has a chilling secret which has only just been discovered by the scientists studying the bottom.
The Sea, which is located between Africa and the Arabian Peninsula, is home to a fruitful and fascinating ecosystem.
Based in Egypt, it's home to an incredibly busy shipping lane, with the traffic going through the Suez Canal.
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It's a beautiful location, and is named aptly because it comes from the seasonal red blooms of algae, which change the water from its blue-green hue to a red.
However, if you dive deeper, it's not quite the same.
This is what people realised when scientists managed to find 'death pools' at the bottom of the sea.
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The reason they are called that is because they're devoid of oxygen.
This means that any animal which is unlucky enough to venture nearby is stunned and killed by the pools.
But anything which is stunned but not killed will soon be picked off by predators, which lurk nearby to 'feed on the unlucky'.
That's a scary thought.
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Make sure you don't swim too deep down there, folks.
Otherwise you'll be fish food.
That's not to say that there's nothing inside the 'death pools', which are home to 'extremophile microbes' that can survive down there where little else can.
Studying the death pools can help us understand how life on Earth began, and even the potential for life on other planets.
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Sam Purkis, professor and chair of the Department of Marine Geosciences at the University of Miami, said: "Our current understanding is that life originated on Earth in the deep sea, almost certainly in anoxic — without oxygen — conditions.
"Studying this community hence allows a glimpse into the sort of conditions where life first appeared on our planet, and might guide the search for life on other 'water worlds' in our solar system and beyond."
The fact that the usual animals found at the bottom of the sea - such as burrowing shrimp, worms and mollusks - can't survive in the pools mean that they remain unusually pristine.
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"Ordinarily, these animals bioturbate or churn up the seabed, disturbing the sediments that accumulate there," Purkis said.
"Not so with the brine pools. Here, any sedimentary layers that settle to the bed of the brine pool remain exquisitely intact."
This means researchers were also able to use their findings to help learn more about tsunamis and earthquakes.
The newfound brine pools 'represent an unbroken record of past rainfall in the region, stretching back more than 1,000 years, plus records of earthquakes and tsunami'.
Their findings suggest that in the past 1,000 years, major floods from serious rain occur about once every 25 years, and tsunamis [take place] about once every 100 years'.
Imagine that, down at the bottom of the Red Sea are pools largely untouched by the world above, tranquil and lethal in equal measure.
Additional words by Anish Vij.
Topics: World News, Weird, Science