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Visible depuis l’espace, cette immense créature marine intrigue les scientifiques (VIDEO)

DIWIDA.NEWS ecology, french, marine animals, science, underwater

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 Plus grande encore que la baleine bleue. Cette découverte vient d’être faite dans les eaux du Pacifique.
 


 C’est aux environs des îles Salomon, dans une zone surnommée “Three Sisters” (ou Trois Soeurs en français) qu’un groupe de scientifiques du National Geographic est tombé sur le plus corail du monde, trois fois supérieure au précédent détenteur du record, indique le média
 
 Demotivateur
 
 . L'écologiste marin, Enric Sala, confie :


 
 “Alors que nous pensions qu’il n’y avait plus rien à découvrir sur la planète terre, nous avons trouvé un corail massif composé de près d’un milliard de petits polypes, débordant de vie et de couleurs”.
 


 L’équipe du National Geographic souligne que la structure autonome s’est développée durant près de 300 ans, partant d’un “réseau complexe” de minuscules polypes coralliens. Et de poursuivre : “elle se distingue d’un récif corallien, constitué de nombreuses colonies distinctes”.


 
 Comme une glace qui s’étend sur le fond marin
 


 Il s’agit-là du plus grand corail du monde, aux dimensions hors norme (supérieures à celles d’une baleine bleue). Dépassant le corail baptisé “Big Momma”, cette structure récemment découverte fait 34 mètres de large sur 32 de long. Molly Timmers, scientifique principale de l’expédition, précise :
 
 “alors que Big Momma ressemblait à une énorme boule de glace posée sur le récif, ce corail nouvellement découvert est comme si la glace avait commencé à fondre, s’étalant indéfiniment sur le fond marin”.
 


 Une nouvelle colonie que, selon les dires de la scientifique, serait observable desde l'espace. Le spécialiste des coraux, Eric Brown, a en outre précisé :
 
 Étant donné que les récifs peu profonds à proximité ont subi des dommages en raison de la montée des températures océaniques, cet important écosystème coralien bien préservé dans des eaux un peu plus profondes représente un espoir.
 


 (ASD - Source : Le Démotivateur - Illustration : Unsplash)

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Visible depuis l’espace, cette immense créature marine intrigue les scientifiques (VIDEO)

Plus grande encore que la baleine bleue. Cette découverte vient d’être faite dans les eaux du Pacifique. C’est aux environs des î...

Scientists Uncover Enormous Living Eggs Deep Within an Underwater Volcano Off Ireland's Coast

DIWIDA.NEWS biodiversity, marine animals, science, underwater, volcanoes

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 In an astounding discovery, researchers have uncovered
 
 thousands
 
 of
 
 giant
 
 eggs in an
 
 underwater volcano
 
 off the coast of
 
 Vancouver Island
 
 , Canada. These eggs belong to the elusive
 
 Pacific white skate
 
 , were uncovered in waters once thought too
 
 cold
 
 and devoid of life to back up such an astonishing discovery.

<h2>
 A Discovery That Defies Expectations
</h2>

 For years, the underwater volcano near Vancouver Island was believed to be
 
 extinct
 
 . Scientists had assumed that the surrounding waters were too cold to
 support much marine life
 .


 Nevertheless, in a 2019 exploration conducted by the deep-ocean researcher,
 
 Cherisse Du Preez
 
 of
 
 Fisheries and Oceans Canada
 
 , the team revealed a surprising fact: the seamount, once thought to be inactive, is in reality an active
 
 active
 
 underwater volcano.


 This finding altered the perception of the area, showing that the volcano emits
 
 warm
 
 ,
 
 mineral-rich
 
 Water—far from being lifeless, the region housed an unexpected variety of sea creatures.

<h2>
 The Mystery of the Giant Eggs
</h2>

 The
 
 discovery of thousands of eggs
 
 belonging to the Pacific white skate was one of the most astonishing finds of the expedition. These giant eggs, known as “mermaid purses” due to their distinctive purse-like shape, are approximately
 
 1.5 feet
 
 across, making them an impressive sight.


 The eggs were found on the
 
 summit
 
 of the underwater volcano, nearly one mile beneath the ocean’s surface. This area, with its warm,
 
 geothermal
 
 environment, offers a stark contrast to the cold waters typically inhabited by the Pacific white skate.


 Researchers were left astounded by the fact that these eggs were
 
 alive
 
 Unlike dinosaur eggs discovered in other parts of the globe, such as the 80 million-year-old fossilized eggs unearthed in Ganzhou City, China, these remained
 
 living
 
 .


 The geothermal activity of the volcano offers
 
 warmth
 
 for the eggs, potentially aiding in accelerating their extended four-year process
 
 gestation period
 
 This is essential as the eggs, due to their small size, necessitate considerable care.
 
 energy
 
 for development.

<div>
 
 
</div>
<h2>
 How Do These Eggs Survive in the Deep?
</h2>

 The Pacific white skate (Bathyraja spinosissima) is a deep-sea species typically found in cold Pacific Ocean waters at depths ranging from 2,600 to 9,500 feet.


 The
 
 female skates
 
 are known to produce large eggs, exerting enormous energy to provide essential
 
 nutrients
 
 for their developing young. These eggs, which can grow up to
 
 1.5 feet
 
 across, are uniquely shaped, resembling purses, earning them the nickname “mermaid purses.”


 One of the most intriguing aspects of the discovery is how the Pacific white skate uses the heat from the
 underwater volcano
 to its advantage. The warmth from the volcano accelerates the development of the eggs, shortening the usual four-year gestation period. Du Preez believes the warm water provides a natural incubator that ensures the survival of the young skates.


 She explained, “The shallow summit of the seamount is almost a coral garden and a safe nursery for juveniles to grow before they descend to the deep.”

<h2>
 Why Do These Skates Use an Underwater Volcano as a Nursery?
</h2>

 This isn’t the first time scientists have observed deep-sea species using volcanic heat for reproduction. In 2018, researchers discovered similar eggs in the Galápagos Islands near hydrothermal vents.


 While those eggs were much smaller, measuring just over four inches long, the discovery pointed to a similar conclusion: deep-sea species use volcanic and hydrothermal environments to help incubate their eggs.


 The Pacific white skates’ eggs near Vancouver Island are much larger, which suggests that the geothermal heat plays an even more significant role in speeding up the development of the young..


 Open the Youtube video

<h2>
 Future Exploration and Preservation Efforts
</h2>

 Following the 2019 discovery, the research team returned to the site in
 
 2023
 
 for further investigation. During their two-week expedition, they captured live footage of a Pacific white skate laying an
 
 egg
 
 and gathered evidence that more than one skate species was utilizing the same volcanic site as a
 
 nursery
 
 .


 The scientists from Fisheries and Oceans Canada are committed to closely monitoring the area to ensure the protection of this fragile
 
 ecosystem
 
 . They are particularly focused on safeguarding the
 
 seamount
 
 and its surrounding environment from the threat of
 
 overfishing
 
 and other human impacts.


 This discovery is not only a stunning revelation about how deep-sea species adapt to harsh environments, but it also highlights the importance of
 
 geothermal environments
 
 in supporting marine life. The research team continues to monitor the site, they aim to further understand how volcanic and hydrothermal environments influence species’ survival and development.


 
 Enjoyed this article?
 
 Subscribe to our free newsletter
 for engaging stories, exclusive content, and the latest news.


 For more news like this, visit
 .

Scientists Uncover Enormous Living Eggs Deep Within an Underwater Volcano Off Ireland's Coast

In an astounding discovery, researchers have uncovered thousands of giant eggs in an underwater volcano off the c...

Scientist Unveils the Secret: How Seals Stay Afloat While Diving

DIWIDA.NEWS ecology, marine animals, science, sea creatures, underwater

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 A researcher hailing from Northern Ireland has uncovered an extraordinary sensory ability that enables marine mammals to become unparalleled divers.


 Dr. Chris McKnight from County Antrim has been studying why seals can remain submerged without breathing for extended periods compared to numerous other animal species as part of his research at the University of St Andrews in Scotland.


 He discovered that, apart from effectively storing oxygen, they possess a distinctive capability to mentally gauge the levels in their bloodstream to prevent drowning.


 "It's tremendously exciting to discover such a crucial element of marine mammal evolution, which plays a vital role in much of their activity—diving," stated Dr. McKnight.

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 He emphasized that the adaptation was crucial for the development of marine mammals such as seals and walruses, enabling both these creatures and possibly other breath-holding divers—like certain birds and reptiles—to lead lives largely devoid of surface time during underwater excursions.


 "Discovering such a crucial element of marine mammal evolution, which plays a vital role in much of their activity—diving—is immensely thrilling," stated Dr. McKnight.


 It feels as though it was hiding right beneath our noses all along.


 "It may appear straightforward and logical that seals can detect oxygen levels, which aids them in making choices to avoid running out of air and drowning; however, from an evolutionary perspective, this places both the species and their bodily functions among the most distinctively adapted creatures," he explained.


 While scientists knew
 <a href="https://www.bbc.co.uk/news/science-environment-22853482?xtor=AL-72-%5Bpartner%5D-%5Bmicrosoft%5D-%5Blink%5D-%5Bnews%5D-%5Bbizdev%5D-%5Bisapi%5D">
 How do mammals manage to remain underwater without breathing for such extended periods?
 </a>
 , they were unaware that they were measuring the duration of their dives.


 To determine this, six young seals were observed at the university's Sea Mammal Research Unit over nearly a year, examining how they modified their behavior based on varying levels of oxygen availability.


 Seals such as Trish and Oisin voluntarily dove into the unit's pool to catch fish while under observation.

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 The atmospheres they encountered had been modified to change the amounts of oxygen and carbon dioxide.


 The length of each dive increased with greater access to oxygen, yet carbon dioxide played no role in this effect.


 This demonstrated that the seals are not as sensitive to carbon dioxide as some other species might be.


 Dr Joanna Kershaw, one of the report’s authors, commended the skill and commitment of the research group.


 She expressed her excitement about working with these incredible creatures and discovering one of the key factors behind their perfect adaptation to their habitat.

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 Deep-diving mammals' secret revealed
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Scientist Unveils the Secret: How Seals Stay Afloat While Diving

A researcher hailing from Northern Ireland has uncovered an extraordinary sensory ability that enables marine mammals to become unparalle...

Deep-Sea Creatures Face Rush as Mining Interests Surge

DIWIDA.NEWS marine animals, mining, mining industry, sea creatures, underwater

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 In the frigid, dark depths of the Pacific Ocean, the seafloor is strewn with metallic stones that mining companies desire greatly—alongside vast populations of bizarre and uncommon creatures that remain largely unfamiliar to scientific community.


 Scientists are hurriedly working to classify numerous recently found species with names.


 The mining sector is urging regulatory bodies to finalize guidelines that might pave the way for extracting resources from portions of the extensive Clarion-Clipperton Zone (CCZ) located between Hawaii and Mexico.


 Previously considered an undersea desert, the CCZ is now recognized for its rich biodiversity.


 They vary from minuscule worms dwelling in the murky sediments to buoyant sponges anchored to the rocks akin to water-filled balloons, and a colossal sea cucumber nicknamed the "gummy squirrel."


 Activists argue that this variety of life forms represents the genuine wealth of our planet's biggest and most mysterious ecosystem.


 Experts caution that mining activities might push species toward extinction before we can even identify them.


 The interest in extracting the "nodules," which are roughly the size of potatoes and hold metals utilized in technologies like smartphone touchscreens and rechargeable batteries, has led researchers to investigate the CCZ area.


 "As a result of our efforts to exploit that region, we now possess a much deeper comprehension of it than we otherwise would have attained," stated Tammy Horton from Britain’s National Oceanography Centre (NOC).


 Researchers have retrieved sediments using box cores launched from vessels and utilized remotely operated vehicles to capture images and gather specimens from the ocean floor.


 In any specific area of the CCZ seabed, a quick look might reveal only one lone brittle star, yet scientists rarely encounter the same individual more than once.


 Horton mentioned that there are "substantial populations of uncommon species," noting that much of this biodiversity is found within organisms residing in the sediment.


 The nodules also create their own distinct habitats, much like tiny coral gardens.

<h2>
 'First step'
</h2>

 The initial inventory of data from scientific investigations in the CCZ, released in 2023, revealed that approximately 90 percent of the 5,000 animal species documented were previously unknown to scientists.


 The ISA aims to have more than a thousand species documented by 2030 in areas of interest to mining companies.


 The process is painstaking.

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 Whenever feasible, every creature should be illustrated, dissected, and given a molecular "barcode," which serves as a type of DNA fingerprint enabling other scientists to recognize it.


 Horton and her team of experts spent an entire year describing 27 out of over a hundred unnamed amphipods — a species of small crustaceans.


 "The primary and essential initial step towards comprehending any environment involves identifying the species present, determining their population sizes, and mapping out the extent of their habitat," she explained to AFP.


 This would outline a foundation for understanding life in the abyssal plains, enabling a clearer comprehension of possible adverse impacts.


 The conservation organization Fauna & Flora has stated that the risks include harm to the marine food chain as well as the possibility of intensifying climate change due to the disturbance of sediments that store heat-trapping carbon.


 The ISA has to finalize the global deep-sea mining regulations this year, however, significant tasks remain unfinished.

<h2>
 Cold War connections
</h2>

 The most ancient mining trial area encompasses a segment of the CCZ seafloor that was cultivated in 1979.


 Daniel Jones, a NOC researcher who sifted through archival records to determine the precise location, revealed that the operation was part of a CIA scheme aimed at retrieving a Russian nuclear submarine by disguising their efforts as deep-sea mining activities.


 According to Jones, the CIA rented a vessel for actual deep-sea mining operations.


 He discovered an ancient photo depicting the approximately eight-meter-(26-foot)-wide device utilized for collecting nodules.

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 His group went to the testing location in 2023, over four decades following the initial disruption.


 He mentioned that the machine trails could still be easily seen on the ocean floor.


 Jones informed journalists lately that they observed "initial signs of biological restoration" on the mining-affected paths; however, animal populations had yet to return to their usual levels.


 The sluggish rate at which changes occur in the CCZ can be seen through the nodules, which have probably taken millions of years to form.


 Each likely began as a fragment of solid material — such as a shark’s tooth or a fish’s otolith — that came to rest on the ocean floor.


 They gradually expanded next, as they attracted minerals present in the water at very low concentrations.


 They include metals such as cobalt that are highly sought after during the energy shift.


 However, the European Academies of Science Advisory Council (EASAC) has stated that the requirement for the nodules has been exaggerated and has called for a halt to mining activities.


 Michael Norton, the EASAC Environment Director, stated that initiating deep-sea exploitation would likely prove difficult to halt thereafter.


 It’s a one-way road," he stated. "Once you head down it, you won’t turn back easily.

Deep-Sea Creatures Face Rush as Mining Interests Surge

In the frigid, dark depths of the Pacific Ocean, the seafloor is strewn with metallic stones that mining companies desire greatly—alongsi...