Deep Ocean
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| Cast | David Attenborough |
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| ID | 3328989 |
About Deep Ocean
Uncovering the life forms that have managed to survive the harsh, completely dark depths of the planet's oceans.
Seabed mining will stress jellyfish - scientists
... Much of the Deep Ocean is unexplored, so seabed mining opponents also point out that mining activity could cause irreparable damage to ecosystems we do not yet understand...
Climate change: July set to be world's warmest month on record
... To work out these ancient figures, scientists use records like the air trapped in polar ice cores, or sediments in the Deep Ocean...
Crunch talks due on deep-sea mining controversy
... " Marine scientists have raised concerns that limited research has been carried out in the Deep Ocean to understand the animals and plants that live there and therefore what the impacts deep sea mining could have on them...
Titan sub: What happens next after sounds detected in search
... While sounds from Deep Ocean layers could get through to them, it is more likely that the sounds are coming from the same ocean layer, Mr Owen says...
St John's ready to help in search for missing Titanic sub
... The US Navy s Flyaway Deep Ocean Salvage System - capable of lifting and recovering large, bulky undersea objects - is scheduled to arrive in St John s on Tuesday evening, a navy spokesperson told the BBC s US news partner CBS...
How do you dispose of a giant whale from a beach?
... " It s called whale fall - this is mainly thinking about animals of the Deep Ocean, but when they fall and die and sink to the bottom of the ocean, they form these little nutrient rich islands that can support a huge diversity of life...
Antarctic ocean currents heading for collapse- report
...By Tom HousdenBBC News, SydneyRapidly melting Antarctic ice is causing a dramatic slowdown in Deep Ocean currents and could have a disastrous effect on the climate, a new report warns...
Ocean treaty: Historic agreement reached after decade of talks
... Richer nations currently have the resources and funding to explore the Deep Ocean but poorer nations wanted to ensure any benefits they find are shared equally...
Titan sub: What happens next after sounds detected in search
By Tiffanie TurnbullBBC News
News that noises have been picked up in The Hunt for a missing submersible has offered a glimmer of hope that The Five men on board are alive.
The Sounds were recorded by sonar buoys in a massive rescue operation, which is racing Against Time to find The Titan in The Middle of The Atlantic Ocean . It was lost on a deep-sea voyage to The Titanic wreck Three Days ago.
Underwater operations have been relocated to investigate The noises, The US Coast Guard has said, but So Far they haven't found anything.
And with oxygen supplies expected to run out at around 11:00 GMT on Thursday, The Next few hours are critical.
US authorities say The noises were heard at half hour intervals for about four hours on Tuesday, according to reports by several outlets.
Deep-sea experts The Bbc has spoken to say it is hard to determine what these noises might be without seeing The data.
But it is possible they could be short, sharp, relatively High Frequency noises - Made From Within The vessel by hitting a hard object against The End of The sub.
Frank Owen , from The Submarine Institute of Australia, says he is confident - Based on The Information available - The Sounds are coming from inside The vessel.
" If there was a 30-minute interval, it's very unlikely to be anything but human Related , " he told The Bbc .
The Men on board include British businessman Hamish Harding, 58, British-Pakistani businessman Shahzada Dawood, 48, his son Suleman, 18, and Stockton Rush, 61, The Chief executive of OceanGate, which runs The voyages at a cost of $250,000 (£195,270) per head.
But Mr Owen says The noises " smack of advice" coming from The fifth man on board - 77-year-old Paul-Henry Nargeolet, a former French Navy diver and renowned explorer.
" He would know The protocol for trying to alert searching forces… on The Hour and The half hour you bang Like hell for three minutes, " Mr Owen said.
The decision to relocate The Search indicates authorities are thinking similarly.
But in previous maritime searches - Like those for missing Malaysian Airlines flight MH370 in 2014, and The Russian submarine Kursk in 2000 - Underwater noises were heard too, and yielded no results.
More on The Titanic subThe other ray of hope is that these sounds were picked up by The sonar buoys at all, Mr Owen says.
The Titanic lays 12,500ft (3,800m) beneath The Ocean surface, where The sonar buoys sit.
While sounds from Deep Ocean layers could get through to them, it is more likely that The Sounds are coming from The same ocean layer, Mr Owen says.
" It is very difficult to hear noise below The [top] layer because The Sound gets refracted by this drop in temperature. "
" But when it's in that isothermal layer. . Between The Surface and 180 Metres . . The Sound behaves really quite straight. "
Mr Owen says if The Sounds are indeed coming from The sub, rescuers should be able to locate it pretty quickly.
" [They can] lay a pattern of buoys around that area so they can get cross bearings. "
" The sonar buoys receiver is able to plot that sort of information really very quickly. . it would take a very Short Time to find. "
However, The Underwater vehicles which have been sent to find The Origin of The Noise " have yielded negative results" .
Related TopicsSource of news: bbc.com