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ghost2509 · 22nd April 2023, 20:53

Elephant seals amaze scientists with their ability to sleep 1,200 feet deep under the ocean to avoid predators

BUSINESS INSIDER
msn.com
Story by Isobel van Hagen
Apr. 22, 2023

Elephant seals drift downwards into the ocean in a "sleep spiral" to catch up on sleep while on months-long foraging trips but are programmed not to drown, according to a new study.

The seals fall into sleep during deep dives of up to 377 meters, which is around 1,235 feet, to avoid predators. They spiral downwards for about 10 minutes at a time during half-hour dives, and they sometimes even catch some sleep on the sea floor, according to new findings published in Science.

The study marks the first time scientists have studied the brain waves and recorded the sleeping habits of a free-ranging, wild marine mammal, according to the University of California, Santa Cruz.

The study examined the crucial nature of sleep for mammals, and pointed out that marine mammals "encounter especially challenging conditions for sleep when they are at sea."

"For years, one of the central questions about elephant seals has been when do they sleep," Daniel Costa, director of the UCSC Institute of Marine Sciences, said.

The lab used tags to track the movements of elephant seals in the Año Nuevo Reserve when the animals head out to the Pacific Ocean for months at a time.

"The dive records show that they are constantly diving, so we thought they must be sleeping during what we call drift dives, when they stop swimming and slowly sink, but we really didn't know," Costa continued.

Professor Terrie Williams, from UC Santa Cruz, told BBC News that it was "remarkable" that any mammal would fall asleep while drifting hundreds of feet below the water surface.

"This is not light sleep but real paralytic, deep sleep that would have humans snoring. Remarkably, the seal's brain reliably wakes them out of it before running out of oxygen.

"Imagine waking up on the bottom of a pool - it sends a shiver down the spine," said Williams.

African elephants currently hold the title of mammal that sleeps the least, at just two hours a day, but these new finding show that elephant seals "rival the record," according to UCSC.

Killer whales and sharks attack elephant seals when they are at the surface of the ocean, which is why they spend so little time near the top and only take a short time breathing at the surface between dives, per UCSC.

"They're able to hold their breath for a long time, so they can go into a deep slumber on these dives deep below the surface where it's safe," said Jessica Kendall-Bar, who led the study.

The scientists fitted neoprene headcaps with electroencephalogram (EEG) sensors to record the 13 young female seals' brain activity.

"We used the same sensors you'd use for a human sleep study at a sleep clinic and a removable, flexible adhesive to attach the headcap so that water couldn't get in and disrupt the signals," Kendall-Bar, a postdoctoral fellow at UC San Diego's Scripps Institution of Oceanography, said.

The recordings showed the diving seals going into a sleep stage known as "slow-wave sleep" before transitioning into REM sleep, which leads to a kind of "sleep spiral" or sleep paralysis, experts found.

Elephant seals do get a lot of sleep when they are on land — about 10 hours — scientists said, which makes their sleeping pattern "unusual."

ghost2509 · 2nd July 2023, 23:16

Squirrel faked his own death, and created a whole crime scene…for attention.

Original video:
http://youtu.be/ruCcGDkPQ6Q

Edited news video:
http://youtu.be/NI72GmYVuZk

sharon · 15th July 2023, 08:02

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evilmoers · 21st July 2023, 23:49

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Fenrir1 · 9th April 2024, 19:12

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ghost2509 · 22nd June 2024, 23:26

A pet donkey disappeared in California five years ago. He’s been spotted living with a herd of wild elk

CNN
yahoo.com
Scottie Andrew
June 20, 2024

http://youtu.be/yweK_qXp-yM

When Diesel the donkey ran away on a hike near his home outside Sacramento, California, five years ago, his owners assumed the worst.

“He’s not aggressive, he’s a lover,” Terrie Drewry told CNN affiliate KOVR in 2019, days after Diesel’s great escape. “But right now, he’s scared.”

Years passed without a sign of life from Diesel — until earlier this year, when a hunter spotted and filmed a herd of at least a dozen elk in the northern California wilderness. Among them, strangely, was a wild burro.

Drewry is positive that the donkey in the hunter’s video is her Diesel.

“Finally we saw him,” Drewry told KOVR this month after the Instagram video began making headlines. “Finally, we know he’s good. He’s living his best life. He’s happy. He’s healthy, and it was just a relief.”

The Drewry family adopted Diesel from the Bureau of Land Management, and he lived on their ranch in peace for the first few years of his life alongside chickens, a llama and a miniature donkey.

But on a fateful hike in April 2019, Diesel noticed something that spooked him and took off running, dragging Drewry’s husband Dave through the bushes behind him, she told KOVR at the time. For weeks they searched for Diesel in the Cache Creek Wilderness, a rugged area northwest of Sacramento made up of nearly 30,000 acres. They thought they spotted him on a trail camera and once found some tracks that may have matched his hooves, but they never found him.

Enter Max Fennell, a professional triathlete who occasionally hunts in wild California with a bow and arrow. On a hunting trip in March, Fennell stumbled upon the elk herd — and was stunned to see a donkey among them.

In a video shot by Fennell, which Drewry said was taken mere miles from where Diesel bolted in 2019, the herd is seen moving in unison. When Fennell spots them, they stop to stare at him.

The animals don’t move again until the donkey apparently gives the all-clear: After sizing up a disbelieving Fennell, the burro turns its head and trots off. The elk quickly follow.

“Probably one of my wildest hunting trips to date,” Fennell wrote in the caption of the video on Instagram. “I can’t get over seeing it and I’m amazed that the donkey looks happy and healthy!”

In addition to clearing land, pulling wagons and providing general cuteness, donkeys can protect livestock on farms. The pack animals fiercely defend their flocks by braying, kicking wildly and charging, teeth bared, at potential predators.

Drewry suspects that, if the donkey Fennell spotted is indeed Diesel, he’s merely doing his donkey duty and protecting his deer friends.

“They learned to get along and be each other’s family,” she told KOVR.

A video shared in September last year also purported to show Diesel with his elk kin. The donkey in that clip looked utterly content, trotting through tall yellow grass in the dappled sunlight.

Though she misses him, Drewry said she won’t try to catch Diesel and bring him back. As grazing animals, donkeys in the wild can usually find plenty to eat. And the donkey in Fennell’s video appears to be thriving in the wilderness, with friends by his side.

“He’s truly a wild burro now,” she said.

ghost2509 · 28th June 2024, 04:59

Scientists Implant Radioactive Material Into Horn of Living Rhinoceros to Poison Anyone Who Consumes It

Futurism
yahoo.com
Victor Tangermann
June 26, 2024

Warning Horn

In an effort to make them useless to poachers, researchers are implanting radioactive isotopes into the horns of rhinos in South Africa.

The unusual material would "render the horn useless... essentially poisonous for human consumption," James Larkin, professor and dean of science at the University of the Witwatersrand in Johannesburg, told Agence France-Presse.

The isotopes would also be "strong enough to set off detectors that are installed globally," Larkin added, referring to hardware that was originally installed to "prevent nuclear terrorism."

And in case you're wondering, the "two tiny little radioactive chips in the horn" pose no risks to the animals' health or the local environment, making it an elegant solution to a very real problem.

Ex Tincture

Rhino horns are extremely in demand for their use in traditional medicine, particularly in Asia, despite there being no scientific evidence to support their supposed therapeutic effects. They can be worth more in weight than gold or cocaine.

According to AFP, 499 rhinos were known to have been killed in 2023, representing an 11 percent increase over 2022. While three species of rhinos remain critically endangered, white rhinos in Africa have fortunately made a remarkable recovery after once thought to be extinct, largely thanks to conservation efforts. According to the report, there are about 15,000 rhinos in South Africa.

Radioactive Rhino

Previous efforts, including poisoning or painting the horns, have failed so far. Conservationists have even resorted to dehorning rhinos intentionally since the 1980s to keep them safe from poachers.

"We get a lot of criticism for cutting with a chainsaw," University of Neuchâtel PhD candidate and black rhino conservation specialist Vanessa Duthé told Discover last year, "but it's the best way, the fastest way [to dehorn]."

However, Larkin is optimistic about his latest attempt. He and his colleagues are planning to implant radioactive isotopes in twenty rhinos.

"Maybe this is the thing that will stop poaching," he told AFP. "This is the best idea I've ever heard."

rex31 · 21st July 2024, 16:36

Quote:

Originally Posted by evilmoers

Goats balancing on a flexible steel ribbon - YouTube

Lool so cute

sordi88 · 23rd July 2024, 14:48

Quote:

Originally Posted by ghost2509

Scientists Implant Radioactive Material Into Horn of Living Rhinoceros to Poison Anyone Who Consumes It

- CUT -

Modern problems require modern solutions.

22nd April 2023, 20:53	#381
ghost2509 V.I.P. Postaholic Join Date: Sep 2010 Posts: 7,799 Thanks: 21,645 Thanked 23,690 Times in 6,115 Posts	Elephant seals amaze scientists with their ability to sleep 1,200 feet deep under the ocean to avoid predators BUSINESS INSIDER msn.com Story by Isobel van Hagen Apr. 22, 2023 Elephant seals drift downwards into the ocean in a "sleep spiral" to catch up on sleep while on months-long foraging trips but are programmed not to drown, according to a new study. The seals fall into sleep during deep dives of up to 377 meters, which is around 1,235 feet, to avoid predators. They spiral downwards for about 10 minutes at a time during half-hour dives, and they sometimes even catch some sleep on the sea floor, according to new findings published in Science. The study marks the first time scientists have studied the brain waves and recorded the sleeping habits of a free-ranging, wild marine mammal, according to the University of California, Santa Cruz. The study examined the crucial nature of sleep for mammals, and pointed out that marine mammals "encounter especially challenging conditions for sleep when they are at sea." "For years, one of the central questions about elephant seals has been when do they sleep," Daniel Costa, director of the UCSC Institute of Marine Sciences, said. The lab used tags to track the movements of elephant seals in the Año Nuevo Reserve when the animals head out to the Pacific Ocean for months at a time. "The dive records show that they are constantly diving, so we thought they must be sleeping during what we call drift dives, when they stop swimming and slowly sink, but we really didn't know," Costa continued. Professor Terrie Williams, from UC Santa Cruz, told BBC News that it was "remarkable" that any mammal would fall asleep while drifting hundreds of feet below the water surface. "This is not light sleep but real paralytic, deep sleep that would have humans snoring. Remarkably, the seal's brain reliably wakes them out of it before running out of oxygen. "Imagine waking up on the bottom of a pool - it sends a shiver down the spine," said Williams. African elephants currently hold the title of mammal that sleeps the least, at just two hours a day, but these new finding show that elephant seals "rival the record," according to UCSC. Killer whales and sharks attack elephant seals when they are at the surface of the ocean, which is why they spend so little time near the top and only take a short time breathing at the surface between dives, per UCSC. "They're able to hold their breath for a long time, so they can go into a deep slumber on these dives deep below the surface where it's safe," said Jessica Kendall-Bar, who led the study. The scientists fitted neoprene headcaps with electroencephalogram (EEG) sensors to record the 13 young female seals' brain activity. "We used the same sensors you'd use for a human sleep study at a sleep clinic and a removable, flexible adhesive to attach the headcap so that water couldn't get in and disrupt the signals," Kendall-Bar, a postdoctoral fellow at UC San Diego's Scripps Institution of Oceanography, said. The recordings showed the diving seals going into a sleep stage known as "slow-wave sleep" before transitioning into REM sleep, which leads to a kind of "sleep spiral" or sleep paralysis, experts found. Elephant seals do get a lot of sleep when they are on land — about 10 hours — scientists said, which makes their sleeping pattern "unusual."

2nd July 2023, 23:16	#382
ghost2509 V.I.P. Postaholic Join Date: Sep 2010 Posts: 7,799 Thanks: 21,645 Thanked 23,690 Times in 6,115 Posts	Squirrel faked his own death, and created a whole crime scene…for attention. Original video: http://youtu.be/ruCcGDkPQ6Q Edited news video: http://youtu.be/NI72GmYVuZk

15th July 2023, 08:02	#383
sharon Junior Member Virgin Join Date: Jun 2022 Posts: 15 Thanks: 7 Thanked 17 Times in 6 Posts	Blue dragon

9th April 2024, 19:12	#385
Fenrir1 Junior Member Virgin Join Date: Oct 2023 Location: Brazil Posts: 10 Thanks: 5 Thanked 27 Times in 7 Posts	Honey badger

22nd June 2024, 23:26	#386
ghost2509 V.I.P. Postaholic Join Date: Sep 2010 Posts: 7,799 Thanks: 21,645 Thanked 23,690 Times in 6,115 Posts	A pet donkey disappeared in California five years ago. He’s been spotted living with a herd of wild elk CNN yahoo.com Scottie Andrew June 20, 2024 http://youtu.be/yweK_qXp-yM When Diesel the donkey ran away on a hike near his home outside Sacramento, California, five years ago, his owners assumed the worst. “He’s not aggressive, he’s a lover,” Terrie Drewry told CNN affiliate KOVR in 2019, days after Diesel’s great escape. “But right now, he’s scared.” Years passed without a sign of life from Diesel — until earlier this year, when a hunter spotted and filmed a herd of at least a dozen elk in the northern California wilderness. Among them, strangely, was a wild burro. Drewry is positive that the donkey in the hunter’s video is her Diesel. “Finally we saw him,” Drewry told KOVR this month after the Instagram video began making headlines. “Finally, we know he’s good. He’s living his best life. He’s happy. He’s healthy, and it was just a relief.” The Drewry family adopted Diesel from the Bureau of Land Management, and he lived on their ranch in peace for the first few years of his life alongside chickens, a llama and a miniature donkey. But on a fateful hike in April 2019, Diesel noticed something that spooked him and took off running, dragging Drewry’s husband Dave through the bushes behind him, she told KOVR at the time. For weeks they searched for Diesel in the Cache Creek Wilderness, a rugged area northwest of Sacramento made up of nearly 30,000 acres. They thought they spotted him on a trail camera and once found some tracks that may have matched his hooves, but they never found him. Enter Max Fennell, a professional triathlete who occasionally hunts in wild California with a bow and arrow. On a hunting trip in March, Fennell stumbled upon the elk herd — and was stunned to see a donkey among them. In a video shot by Fennell, which Drewry said was taken mere miles from where Diesel bolted in 2019, the herd is seen moving in unison. When Fennell spots them, they stop to stare at him. The animals don’t move again until the donkey apparently gives the all-clear: After sizing up a disbelieving Fennell, the burro turns its head and trots off. The elk quickly follow. “Probably one of my wildest hunting trips to date,” Fennell wrote in the caption of the video on Instagram. “I can’t get over seeing it and I’m amazed that the donkey looks happy and healthy!” In addition to clearing land, pulling wagons and providing general cuteness, donkeys can protect livestock on farms. The pack animals fiercely defend their flocks by braying, kicking wildly and charging, teeth bared, at potential predators. Drewry suspects that, if the donkey Fennell spotted is indeed Diesel, he’s merely doing his donkey duty and protecting his deer friends. “They learned to get along and be each other’s family,” she told KOVR. A video shared in September last year also purported to show Diesel with his elk kin. The donkey in that clip looked utterly content, trotting through tall yellow grass in the dappled sunlight. Though she misses him, Drewry said she won’t try to catch Diesel and bring him back. As grazing animals, donkeys in the wild can usually find plenty to eat. And the donkey in Fennell’s video appears to be thriving in the wilderness, with friends by his side. “He’s truly a wild burro now,” she said.

28th June 2024, 04:59	#387
ghost2509 V.I.P. Postaholic Join Date: Sep 2010 Posts: 7,799 Thanks: 21,645 Thanked 23,690 Times in 6,115 Posts	Scientists Implant Radioactive Material Into Horn of Living Rhinoceros to Poison Anyone Who Consumes It Futurism yahoo.com Victor Tangermann June 26, 2024 Warning Horn In an effort to make them useless to poachers, researchers are implanting radioactive isotopes into the horns of rhinos in South Africa. The unusual material would "render the horn useless... essentially poisonous for human consumption," James Larkin, professor and dean of science at the University of the Witwatersrand in Johannesburg, told Agence France-Presse. The isotopes would also be "strong enough to set off detectors that are installed globally," Larkin added, referring to hardware that was originally installed to "prevent nuclear terrorism." And in case you're wondering, the "two tiny little radioactive chips in the horn" pose no risks to the animals' health or the local environment, making it an elegant solution to a very real problem. Ex Tincture Rhino horns are extremely in demand for their use in traditional medicine, particularly in Asia, despite there being no scientific evidence to support their supposed therapeutic effects. They can be worth more in weight than gold or cocaine. According to AFP, 499 rhinos were known to have been killed in 2023, representing an 11 percent increase over 2022. While three species of rhinos remain critically endangered, white rhinos in Africa have fortunately made a remarkable recovery after once thought to be extinct, largely thanks to conservation efforts. According to the report, there are about 15,000 rhinos in South Africa. Radioactive Rhino Previous efforts, including poisoning or painting the horns, have failed so far. Conservationists have even resorted to dehorning rhinos intentionally since the 1980s to keep them safe from poachers. "We get a lot of criticism for cutting with a chainsaw," University of Neuchâtel PhD candidate and black rhino conservation specialist Vanessa Duthé told Discover last year, "but it's the best way, the fastest way [to dehorn]." However, Larkin is optimistic about his latest attempt. He and his colleagues are planning to implant radioactive isotopes in twenty rhinos. "Maybe this is the thing that will stop poaching," he told AFP. "This is the best idea I've ever heard."